Ukazateli avtorskikh svidetelstv i patentov na izobreteniya, vydannykh v Soyuze SSR za vtoroe polugodie 1937 goda./Index of copyright certificates and patents for inventions issued in the USSR for the second half of 1937. In Russian - landofmagazines.com

TransliterationUkazateli avtorskikh svidetelstv i patentov na izobreteniya, vydannykh v Soyuze SSR za vtoroe polugodie 1937 goda.

In EnglishIndex of copyright certificates and patents for inventions issued in the USSR for the second half of 1937. In Russian

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