Vulf L. S. Ekonomicheskiy imperializm v Azii i Afrike.  So vstupitelnoy statey:  Ot imperializma k sverkhimperializmu.  Petrograd-Moskva. Kniga. 1923. 98 str./Wolf L. S. Economic Imperialism in Asia and Africa. With an introductory article: From Imperialism to Super-Imperialism. Petrograd-Moscow. Book. 1923. 98 p. - landofmagazines.com

TransliterationVulf L. S. Ekonomicheskiy imperializm v Azii i Afrike. So vstupitelnoy statey: Ot imperializma k sverkhimperializmu. Petrograd-Moskva. Kniga. 1923. 98 str.

In EnglishWolf L. S. Economic Imperialism in Asia and Africa. With an introductory article: From Imperialism to Super-Imperialism. Petrograd-Moscow. Book. 1923. 98 p.

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