Kupfer A. Opytnye issledovaniya uprugosti metallov, proizvedennye v russkoy tsentralnoy fizicheskoy observatorii./Kupfer A. Experimental studies of metal elasticity carried out at the Russian Central Physical Observatory. In Russian (ask us if in doubt). - landofmagazines.com

TransliterationKupfer A. Opytnye issledovaniya uprugosti metallov, proizvedennye v russkoy tsentralnoy fizicheskoy observatorii.

In EnglishKupfer A. Experimental studies of metal elasticity carried out at the Russian Central Physical Observatory. In Russian (ask us if in doubt).

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