SCIENTIFIC ABSTRACT SEBESTA, K. - SEBESTYEN, G.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001447610012-5
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: August 23, 2000
• Sequence Number: 12
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

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Some Note% on the 11~rkhau_%On FAVC1. (lit C/.sh~'
*0 91 Virfav Liatif 04tallurgirial T,,p
-3, Jan. 1948, p. 14-16. 9
Outlinel_-'~ additional experiments connectrif with
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S-6--c.12 V61.12[2 0?'lithaLmology
223. COPPER INTRAOCULAR FOREIGN BODIES. Das Schicksal der intra-
okuldren Kupfer-Frez
ndkdrper. Sebestydn G. Au~;anabt. des J&nos-Spit.'.
Budapest. KLIN.MBL.AUGENHEMX. MN7, 130/6 (747-752)
Four cases of copper foreign bodies are prezented. All of them N-,rerc in
the posterior se
gment for 3 to 7 years. One of them miVated spontaneously from
Ahe popterior segment into the anterior chamber and was then removed. The'cecond 'J
case caused a traumatic catamct.which was extracted, vision ~iaz lozt after this
procedure. The third patient developed a subacute uveitis 7 years after injury cmd
so did the fourth ca
se, 3 years after.injury.The last thrce patients were treated
with intravenous injections of sodium-wthiosulpbate, The author concludes that in.
cases of copper intraocular foreign bodies watchful waitino is indicated, excent. for
the symptomatic treatment of any secondary inflammation. The beneficial effect
of sodium -thiosulphate is reported but It is felt that such treatment c=not cau-,c
the regression of patholo ical changes already present.-The point of such treat-nnent,
9
As to prevent any further deterioration and to allow the regenerative power of the
organism to act unhindered., Surgery is permissible only if it Is reaconably certain
that the foreign body can be removed with minimal traurna to the eye, since the
surgical procedure itself may result in the loss of useful vision.

Z/034/6o/ooo/0l2/oO5/0l5
E073/E535,:
~Apparatlus for Studyingthe. Thermodynamic.Constants of Solids*~
'Isotope Exchange.'Method
an oil-filled,container, inside,a:dewar:vessel which is maintained
at,:OOC by means of meltinglice, The thermocouples are connected to
a 6--chann(il recorder- parallel to this recorder a,precision
laboratory compensator 'JLSrconnected and zero deflection of~the
mirror.galvanometer..Indicates temperature deviations of +.I~C. The
temperature is maintained with this accuracyby continuous manual-
.regulation of a variational transformer. 'After dismantling,:.the
components used in,the.furnace-can,b,e.used for any other vacuum
work. The instrument was produced from.,the vacuum.instrument
HBA-1 manufactured.by.rairl 7pi-g- -'P-a East,,Germany~,~ Thermodynamic
'constants are determined-from the speed of evaporation,urhich+is
measured on the basis Iof ion,.exchange. ..Each"ion exchange cycle
takes 10 to.,60 min,.depending on the temperature. After cooling$
the-condensation activity on'the aCC eptors is quantitatively
,.,determined and this is,followed:by radiochemical separation of the
ndividual,isotopes.+ , Several heat-cycles are used., For determining.
the.-speed of evaporation, three to.four,points aresufficient,
'whilst.for determining the diffusion coefficient.a larger,number
of valu&s J .Ls,required. By means.of this method the thermodynamic
Card 3/

25631
Z/046/61/000/002/004/004
DO07/DlO2
A study of thermodynamic...
evaporation rate. At first, the quantity of radio-.
isotopes deposited on:the acceptor.increases.linearly.
L Subs6quently
it 'gradually decreases due to the obvious,change. of A,, the effect,
0
-r verse flow of radioactive atoms.
of d-1 ff us ion processes, and the e
from the acceptor tub the donor which increases with increasing a .ccep--_1-
..tor activity. In the tests, this reverse flow was.reduced to a.ne-,-
glig-ible: minin3.im by repeated. electrolytic removal of the acceptor
activity. The method was, use(!. to stiidy the. evaporation rate of ~ Fej'
Co and W from three types of chrome-nickelsteel alloyed
WlthL V2 W and. Mo. The', d6nor specimens were activated: in a nuclear 're-
actor and used only after the short-lived isotopes had.decayedo The
sper.1mens, enclosed in A120 3 casettes, were, stacked in- amolybdenum
basket and placed in a hi-gh-quality vacuum oven of a minimum thermal
Lneria. The heating element-of the oven,was a Mo-spiral surrounded::,
-Y r,iple t r
hermal shield.: Three Pt..-.FtRh thermocouples we e in
b.
direct contact wit-h.'-the tasettes, and the.temperature measurement was
made using ajaboratox~y,compeasator bridge.' The temperature was
Card.3/5_

2c5'53-
Z/046/61/000/CO2/004/01~
Alstudy. of thermodynamic... D007/D102
PA11LIC1.1-1y:c-ontrolled. ..After electrolytic:removal. of 'the entire aocep-
r, 0, r acU,vity, the.individual elements4ere separated by the carrier.
or.ion-exchallge-method, and determined with scintillation,counters of
Czechoslovak arid Soviet production. A total of 42 specimens was
tested and. the evaporation rates were investigated' for seven tempera
ture.5 in.seve.n time intervals. Since the sublimation.temperature AH
is closely related to the binding energy of the crystalline lattices-
'" I r
Ine tested materials can be arranged according.to thei established
tbermodynam-ir, stability in the following sequence;.,
Material Fe (kcal/mol)- Cr (kca-l/mol) 1~n (kcal/mol)*.
T 50.4 58.2 38~O
112.4.1, 45.5 39.7 -
TrT ~'5717 69~4 1~0 1- 8
I t c, CM: e F, ee' nthat material III has the best thermodynatmic-stability.
These results are in.: E--,Ood agreemen-t with other te.sts perf ormed at, the -
Wiz, as well. as. with ~ the theory of-alloying chrome-nickel steels.with
Ma,' V, and~,W. In conclusion, the authors.stress the suitability.of:
Card 4/5

26273
Z10381611000100310,021003
Ll I Ll 1'~, A201/A126
DO
AUrr-FORS. 7.it~ianskk, Bohumil, and Sebestifin, Imrich
TME; Radioisotopes in the study:of thermodynamic stability of steels
PERIODICAL: Jaderna'.energie, no. 3, 061, 85 89
TEXT: The artticle deals-with the application.of the isotopic7excharge meth_~
Pd to the determination of the vapor-phase pressure,in multicomponent steelsystems.
This determination is-essential for the investigation of the thermodynamic, stabil-
1,1y of steels. To determine the partial pressures of the individual steel compo-,
nentz, the authors studied the evaporation rate of the individual.elements using
..radioisotopes obtainedby activation in a nuclear reactor.. The method.is based or.
"he radioactivity build-up which takes place on a stable sample (target) whenit
is placed on a radioactive sample (source) of similar physico-chemical propert, es,
and heate&at a definite temperature in a,high,(in.the.order 0f-10-5 mm Hg) vacuum
until.themodynamic equilibrium between the two,,specimens is. reached. The,samples
are enclosed in aluminum-,oxide cases., When the preset temperature,is reached,
the vapor-phase starts developing from both thetarget and the source. In the high
vacuum the evaporated atoms easily travel the distance of about 1-mm between the,
-ard
1/5

Z/038/61/000/003/002~~3-
-r,opes~in_the study of
Radiolso A201/A126
oms from.the.s6urce condense on the target,,Wrille
-cimens and theradioactive at
the stable atoms,froin'the targett;condense on -the source. Con.-equently
ra e
changes occur during annealing, on.y isotopic excha--Ze. takes place. The. t'.6f
t"q ilsotoplc e:kchange takes place The rate-of -the isotopic. hange,(' e. -t1h
exc
radioact.ivi~y build-up on the target) is identical. with the,evapgration rate of t e
_h,
investigation Since the atoms evaporate at, the same.ra're
s.;eel.components under
-from both the. -source and the target, the result-ant activity of the 'vapor phase is
one-half of the activity of the vapors,evaporat-ed from the source. The ciroum-
s1*.anCs that isotopicAilution takes placeduring the isotopic exchange has been.
overlooked in papers published so-far-The evaporatlion rate w during the ls.;:itcp~
excriange is calculated from the relation.
AX
W
3 t
0.:),- Ao
where Ao Is the zpecific activity of the source, Ax:is the activity of the target,
!s+ the surface area,of the source, and t is the annealing time. Mae declinirg
tendency of the kinetic curve, as described in'papers of.other authors, is dou!3t-
-the reverse f low of radioactive atoms f rom t--.he ar the zo*j,rrA.
leszz~ Y due to
C a -rd, 5

26274
Z/038/61/000/003/0WCY)3
Rad flniso~,opes in the study of... A20IIA126
Th i s efffec-r cannotbe.remedied by increasing the disproportion between the surface
arc-as of the source and the target respectively, as wassuggested by L. IL; Ivanov,
V\
[Ref. 12~ U'spechi fyzi6. nauk,'1955, 57, no. 31. The authors avoidedthe reveme
flow by electrolytically removing the accumulated activity from the,target after.,
d e f I r, i il, eisot-opic-exchange periods. Even so, the reverse flow could,not be entire'-,
ly elIminated, but it could be considered ne ligible. From the kinetic curves,,
9
the evaporation rate can be~determined. The partial pressures of saturated.vapors.
t-n e sublimatlon temperature and.ad.ditional.thermodynamic functionscan be calculat-
ed. The results thus obtained provide clues as to the formation of intermetallic
compoands, or their decomposition.el~tgiven temperatures; thermodynamic stability;
Suitability of alloy steels in general, etc. According to V. Yu.. Kornev and S. L.
Zubkovskiy [Ref, 13: Novaja metodika.izue'enia processa sublimAcil inetallov (New
method of studying the sublimation. process of metals)], it Ys -s"ufficient to-know~
decendence of the saturated.metallic-vapor pressure on temperature in arbit-ra-
:!7~y, relative units. The numerical data of evaporation rate and pressure, as ob~-
tained by the method of relative units, are*not generally valid, but "the conclus:I(m
t-Aved from them regarding,&H and other thermodynamic relations are correct-, and
grretaily valid. The accuracy of the determination of both absolute and r-z1al;Ive
of-siraDoration rate and partial pressures depends not only on -,,re ac;---i;rac~y
Cara 15

26274
Z/038/6 1/0-00/100V,)02/,)0~
Radiois6topes in the study of ...
of remperature measurement, but mainly on the determination.of thetime of
Iso*.,,opic exchange. The authors used this method.for the study of . the 4-hermoiyna-
M I c ~ s'--a bl. I Lty o fspecial chromium-nickel'steel:s alloyed with tungsten, vanadium.
and [110I.YN'lenum, Evaporation.rates of iron, chromium, manganese, cobalt and par-
t lall Y also tungsten were investigated. 'The radioactive samples were used for t~e
to*
experiments after thw short-lived iso pes had decayed. The a6cumulated activity:
'Was elecTriolytically removed f.rom the target.in definite intervals. The removed.
radlolsotlopees were chemically decomposed into the individual.elements and Z~helr
respective quantities were radiometrically determined. Activity measurements were
mIade.w"'-.h scintillation counters of.Czechoslovak and Soviet production.: The de-
pl ti kinetic curves from which*'
r-mined. quantity,values were used for ot ng
e mp-P
poratioel rates were calculated., Thetests were, p rformed,with a.total of 4,:* sa
evaporat
-h- -ion rate was determIned foe seven different temperatures and in,seven
tAmeAntervala. Since the sublimation temperature,&H is closely:related to Ithe
Z:~~.,Plllng energy of the crystalline lattice, the lested materials can be, arranged,
in Z;he following, sequence Iaccording -to their thermodynamic stability,, based~on the_
rates of three elements,
C". A :--d 4/-1

~v

C
-cf- .3'(616.155-392:616-006-113)
Z2 UDC 612.111
J.; S ist Int
vi~~,D, A Rip B.; V.;-Z
,:.46
n. Cli
al nic, .,"a--. of G n. ~'ed.,, Gh-zrles T?T~. T 'i nika
Faic. Vseob. Lek., XU),. Prnrf o, Head (Prodno ~V Y-O:--.,-IIG;
-U --ta' ; Frof Pr
InstiL.-uto of -Hermatoloiry and.Blood Tranzsf us ions (Ustav Hematologic
a Krovni Transfuze) Prar-uo, 'Oirector (Redital) Prof Dr J. !jiO.?2j-,I;'
(Biof- C
Bionh sical Institute Yac. of Cron. Mod. Cha-.-1, i Univ. yzil, al
. Y "': - Dr
ni U3z;av 10alk. Vseob. Lek. KU)p Prnguo, iifoad (N-cdnosta) Dr) on
Z. DIMISTBIM.
-ts or -eticul
1~rythropoiesis. in Lotelcor,,,ia and Homobi. 6 na of the Lyrpho i
ar Line.
Pra 1050 leb 29 6 Jul '6, -pp
lc~t a h,,, Vol 0
Fue, Casois LokarUrCeS
7616
77D
'Abstract /A-uthors',English summary nodified In
-7 30 vatients, suf
ia and lympho reticular homoblas
Tering frIon l1eukram torm~ orythronoies-
is was decreased in 8, normal in 1p, increased, in 18. !,'either tho~
normal nor the incroased,ery',,hropoiesis reached.valuest-thera it c6ul
eoinpensate anonia due to,h perhemolysis. Erythropoiasis:romains.in-
~y
suf:icient and must beconsidored in 'Che pathoCenosis~of thedisoase
^4 a ~3 Czech:r'eferences.
3 FiFrures 3 Tables,: 10 stern,

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U

35335
S/194/62/000/001/023/066
D201/D305
(113
AUTHOR; P h P s tvkz-__.B 6 la
TITLE: ~Design~ of-.the power supply voltage regulating unit
PERIODICAL: Referativnyy,zhurnal, Av,tomatika i radicelektronika)
no. I , 1962, abstract 1-2-97 sbch (tPle'rei's eis automatI4
1961, 9, no. 3 84-91
TEXT: Unit.-regulation of the:power supply output voltages is usual- i:.I.
ly achLeved by varying the: resistance,.of the divider,- which Shunts
the output -terminals of the -power supply and which is, a partof th e~
network. Che_
SSaVI 1ZIng Th e regulating element may be connected to t
divider either in aarallel(A) or in series. (see flgure)~ and it, he
-following design is possible: 1)' The overall resis tance of the.di--
V4 der remains --onstant,and the.tap varies.1 2).The lower part of
the:dividerremains unchanged, the Lipper part varies. 3).-The upper,
par" does not change but the, lower. part.varies..,In methods 2/4 and
2/B /-Abstracter's. note: B.denotes series connection of the.regu-
a
tiEg en t -7;: the divider current rema:.ns con n
elem s ta' t and, the a e
Card I/Q~

'
Design of t, h e power . .. D201/D3
05
nethcds are suitable for a widerange regulation. In case %/A~,
Y/V (r., r ):r
2 :1,+ r r and, with the changed tapping b A r,
A
2
r -
V r :r ).-(l
+
1 Ar:r Denoting.Ar:r. by and the ratic-
1
,
.2
/V by c(, we get 0(,= 1;(' + P), i.e.! the relative voltage change

-
4
,"
Y on the:r
depends on] lative voltage and independen
of the.oul
e
put vol-tage or X If
~' there uired voltage chan,$e is iyen- ther.
V
l
l
A
N

I
the
s
+
case t
, by~ ana
ogy t
r
ottained, i.e. depends on the ratio of the output to the re-qui-
tan t volt-age as Well. In the ca--,? 2/A, p (,:V,- 1);(V /V a nd the
r
~1~3-se ?/B s -the same. In
the case 3/k,
r V a n d in

3,/'B P; C-1
same -
'
a.s in +1 I/A. The advantages and disadvantages

Ljf+ pprate -ircuits with continuous and step-voltage c on t ro I by:
Se
e-1--jua 1. at ep a-) are o n 9 id 0 r 6d . /-Abstracter's e C o m p 1: e t e t r -a13 -
L) t i on.
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00 't frimin arentring can be~smmttimmd up as follows; 'Me 4509
characteriolleg Pit the CurveIN&Midog the changri; In ::04
the romber (it fineness " not rhanitir rwen Idler coo
arnoring-The Iner, mf In mmollintimily mid mirallerI114 Ias 0
Ill it residt of h*h mccarlaq losses. Under Werilk-al
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too
te 0 coramme with arying tierlirin
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ronlent mim -,dku-a r at dMereni drOurta. The,.
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unw
Anrod ceteriam Is 11 llp Illy-miliaped. The brrsk-
go0i
inif stremeth and elamealina OF mou"d silk In morv Agee
11"iffiamm tbsn that of rev Ali, Whille the . hrmking
'llf'"Wh Is not is% ON InFlutim-W by ilie wrlirin Pool-
WOO
j Phi, the arourimil Inal, litimpintr, hears a prplimllon-
ate Imilliornre on it, Mwe the alreorhing pre4wrilen gor
WoUred mi:k Iftreapea. The Immking Alrenjoh J% SlAn bee
:t MGI-. The onmusil disfir0mllon of the number or

It 2-
Cleo
~: t.~ sle.SLA 61TALLURGICAL I raw 1111k is ghle to prior ad"llaft.

Is W113'.1p 049 mill 11 CHI iuc Q%T 411
. I IF at 0 Aa a
b u16 &V a is
w 4 0

4
;
7
I'a 0 -00 0,4111 0 00 0000 0 0
0 0 q 0 q 0 q 0 4
r 0 a 0 :
0
0 0

0
:
0
::: : : to
4
1 0
0 0000 66 0 00 0 *
100
9 0.0 0 0 00 0 49 9 0 .

r 4

Hungarian TechnioallAbot.'. thri

0
2 Ilu"

tan,

tit
nd
thw

Inq

t, bt
146

01, V

4q; hl~tv:lli --the, k--xtu-ii( tit wfilili hi, i Te-Rsed Gf'il" W-- it
kit" I
Ij (I clitill he '61it of 10.1rillgi ilia yarns'pablIVI-~'. I I
(4 11-iltill'J"are rint sifonm Ill the Ix-ghlilin (Iffilrepto
111v 111111tiLillml ill Olov yarns Is first- straighteor-d mj`j'~. ifli'MI4. A1141
%thilv tilt- k-.aves it% ilia yativ; ninning crrim%viow: homme i 1 la.
100MInotirmot(d. w;a consvilitence the test strip nlrrm",_:- 4-4.s g Islull
1.14 jil civri,fillffit", thiCeilirv~- 4f 11W
imitti kki~ em"I'll
t1111116:1 A I"ll"t A titV
Ill 3Clo. kill
he monin-k tit kirmi tilt
Ifiv dedilved '(111.1lior
'It-' fit
hi
A ibv~. urv i 1 hj~1;4 11fl,11l'i"I Illf ynrP
I he~ I lord slim - ill
I lov fit, 1,!i
4
I iint'strip rif
;tilt +-%cf F+; lcilg(hlk
kit Fitt; . ..... 10 1. IW - IIII1.1..171 irel.)t-:
;,I A I I'll will 1.1 Iii! ~ jm,l Coll
ill Ivilgi It: ollemm that AN
11; 41'. I.-r Colt gwiili+ �11cuti thri&
that wl-re thu, V;lrns! eon'lif
jilg gilI s -1
%could. 1. it v
me ..,111v yatoi ivoitfil ainnitt to'mily_~
11111A ill
lukill, 1.4- Vr C(".t betWern the x1tev" nr
y-'Xro- TI
I --t dith-rehei may be ovokinkird.
1".4 Avcrk~. kint alvtriyx~ Identical4a ~nli the
The "restills -1dtow,:-howcv(+, that in
dge, ~'Ailv
,the
rc, v It;; Ir
-.!t77

uddatm- oir the 'carrelptiowbat
Wma tha
. (1) a I Av~g t., ~:, 1 1". ~
'daUy,_-.!e6ding% in4 -the', quiutitiai;~fi:
number df-
and qua
We an
qualitative cmulitiam cocoons~ o "Wor= - t
ha cl ad
b
pro lem
twelvd,
the live ~dail~: t dall
time
I '~61 guilbe 1caves~,wete u
1111W-Ug I'IGKIU _Jt UVMilp IWUCVQ'u , ORG WUU Mr. as ~W
a-,., Ylel
ngs~- the jer- in 4.
t
7, ~.43;~~IrUrtfie"W t,
M, 3c Percentage of fhii~
is also higher-witivAhe~ twelve feed'~nip'_;. Ax, for
hl
r0 ep), ~-,Wornt
;Mt an different: iiiavcs,:~ I-w-orms-hatche4-~the,tbuA'da~,.'
dap--voucre--best: In-- quality,
-.'.boiYovvr' -,the- WWitygracip4lly deacased.Vitli on
AUL. -ti
xyw~ , I I ~
the fj~.St d4 rjded
YYj SO% first grade cocoonk thosc~batchecl
the liftlidn~ only:61 ,.fJn the other band with zz-
da flist

s/:L96/62/000/003/003/012
E,194/E.155
'AUTHOR., .5 eb es -Gy~rgy
TITLE: The relationship between~the-colour temperature-of
a source o f 1.1 ht and the illumination
YERIODICALi Referativnyy zhurnal, Elektrotekhnika i energetika,
(Munka ede' 6
n .3. 1962,-,4, -abstract 3 V33. v Lem,. vi
no, 10-12,. 196o, ~11-13) (Hungarian):
TEXT. s In studie's of industrial lighting the illumination is

ol u temper ture of,
usually measured without allowing for the c o r a
the.'light source. However,,the sensitivity of the human eye also
depends on'the~spectral composition.of the.radiation r .eaching it~.
investigation of Kruithof curves-shows that the light of
incandescent lamps (2000-3000.0K) is agreeable to the eye only up
to an illumination of about~500 lux. IFor.warm-4hite
-fluorescent lamps-(2700-3000 OK) the corresponding figure is
~100-500 lux-
therefor6i they can-be used together with
Incandescentlamps, but only for illuminations not greater than
100 lux. White coloured. fluorescent lamps (3500-4200 OK) omthe
Card 1/2

iiIIAt fit one -slargy Wilaints 4 ffiv~cs i
ett -- -----
pjojeel. 10 y. - ILUI d h-a 1. 0
b
IM I, ~IIPLP13~0_st 11
l-"PlIdipar. V01'. 5j 1050., 0.,
p
I "MI "411-be WIMOUt *46 VIWI~i
At LOIL
oil
cii- , r
buciiients. In 'ott
ter to s'r fd tilt tist lict 0-11 I-ok
tCdIICC CMAS (Ull-111 abricatiou hus beell o4olAcd, 4
5
Voundations consist of concrete piles driven to depths
Libricateil soffit b6nis
V~irying betweeit I to 2 nt. Pret
testing on these piles support the land 61 the- wall fftrue-
ture and contribute at Uie same thito to the appearance
of the btifiding. Three t es of buildings. dMering in
living space only, haveyEten designed to a two-way
horizontal module of 0:8 m. Full-height- load bearing
wall slabs have been east front a mix consisting of fly!
ash, hydrated Ujae, grdn6lated blast furnace' sla_
'and
of -thd hardene4 panel material
The d6sl~y
ix-29-dwk 6ibtf strengtir of 90,
is 12 to 1300 lig/cifan ~~V
os_ 7r,". _.,i
!iq-~m-' Panels, aie'-des, ned to. suit; all't1irm ty
been 0
Ybuildingsi Wlndovy~i an ~&oid hdi e
1e crectioti of the. panels-The total
subiequent td th
julied tot. 6ch home is 22 whic
number of panels req
I and,-,
W-IS, mlqster
-:7~-`other_. bUUdl#g~-!_trAddW6rk
IiAVet
6nvititibnal'methoU The, tooling consists '6f'precast`-
prestressed triisses. titit, e6ttstructibn costs, tr. oq.tn J tf,e
ivist:
space are -the same as Thos. ol uddings
r
t: to d~vlan"verall_costsihx
b7 standar

(3 E 'F (71
HMGAff/Chemical Technology. Chemical~Products and.Their H
Application~ Part 2. -,.Ceramics. Glass., Binders.
Concre tes Binders, Concrete s and Other Silicate.
Building Materials.,
Abs'Jour: Feferat. Zhurnal Xhimiya, N0~21, 190, 71603
Author Gyula Sebes
Inst
Title World's Production' of Light Concrete.

Orig Pub:-
Epitoanyag, 19 t 6 323-324.
57, Nc
Abstract: Some data concerning.the production of porous
concretein'Sweden, West'Germany, Canada France.,
Mexico and USSR, a13 well as data concerning ~ the,
prmduction-'of.light,aggrega~es are presented.,
BibliograpIty with 15 titles.
card i/l