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  1. SCIENTIFIC ABSTRACT RYS, J.- RYSAKOV, N.

    which varied between-~ 0.5 to 2 H units. Th e structural changes 'were studied on a Zeiss Neophot ... filter (jena I C.4), washed with water at room temp.. and dried at 130' to const. wt. When iustra ...

  2. SCIENTIFIC ABSTRACT OSIPOV, V.P.- OSIPOV, YE.G.

    Zeiss.elant in Jena is described. The apparat-us is well adapted for stereoscopic ex- I amination ... the Karl Zeiss model with photo interpreters manufactured in the US (Bausch and Lomb), the USSR (SZS ...