Photograph of Ivan Petrovich Pavlov (1849-1936) a Russian physiologist and Nobel Prize-Winner for Medicine. Dated 20th century

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Size: 3825px × 5482px
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Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 20th, archival, archive, black, century, classical, condition, conditioning, historical, history, ivan, laureate, medical, medicine, nobel, pavlov, petrovich, photograph, photography, physiologist, physiology, prize, prize-winner, russia, russian, white