Ivan Pavlov (1849-1936), Russian physiologist, psychologist, physician, Nobel Prize Winner in Physiology or Medicine (1904), postage stamp, Russia, US

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Ivan Pavlov (1849-1936), Russian physiologist, psychologist, physician, Nobel Prize Winner in Physiology or Medicine (1904), postage stamp, Russia, USSR, 1991

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Size: 3760px × 5360px
Location: Russia
Photo credit: © Ivan Vdovin / Alamy / Afripics
License: Licensed
Model Released: No

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