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Filtering by: Subject Pavlov, Ivan Petrovich, 1849-1936 Remove constraint Subject: Pavlov, Ivan Petrovich, 1849-1936

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  • I. Pavlov

    Description/Abstract: Pavlov, in a dark pinstriped suit, with his arms crossed. Facsimile signature. Text in Russian. Numbered 10493.
    Date: undated

  • Ivan Petrovich Pavlov

    Description/Abstract: Portrait of Ivan Pavlov, who developed the concept of the conditioned reflex action.
    Date: undated