Opticheskie pribory. Opisanie sovetskikh izobreteniy (avtorskie svidetelstva i patenty) 1936-1938gg./Optical devices. Description of Soviet inventions (copyright certificates and patents) 1936-1938. In Russian (ask us if in doubt) - landofmagazines.com

TransliterationOpticheskie pribory. Opisanie sovetskikh izobreteniy (avtorskie svidetelstva i patenty) 1936-1938gg.

In EnglishOptical devices. Description of Soviet inventions (copyright certificates and patents) 1936-1938. In Russian (ask us if in doubt)

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