Brokgauz, Efron. Novyy entsiklopedicheskiy slovar. Tom 17. (Dushevnye bolezni – Zhuki)./Brockhaus, Ephron. New Encyclopaedic Dictionary. Volume 17. (Mental Diseases: Beetles). In Russian - landofmagazines.com

TransliterationBrokgauz, Efron. Novyy entsiklopedicheskiy slovar. Tom 17. (Dushevnye bolezni – Zhuki).

In EnglishBrockhaus, Ephron. New Encyclopaedic Dictionary. Volume 17. (Mental Diseases: Beetles). In Russian

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