Works Cited Barnett, Vincent, ed. Europe 1789-1914: Encyclopedia of the Age of Industry and Empire. . Vol. 4. Detroit:: Charles Scribner’s Sons, 2006. Gale Virtual Reference Library. Web. 19 Nov. 2009. .
Bulla, Karl Karlovich. Professor of the Imperial Military Academy of Medicine Ivan Pavlov with assistants and students before demonstrating his famous experiment . 1912-1914 . ARTstor. Web. 19 Nov. 2009. .
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