![STOCK IMAGE, , 11942381, 01AE2E9M , Science Source - Search Stock Photos, Images, Pictures, Photography at Diomedia STOCK IMAGE, , 11942381, 01AE2E9M , Science Source - Search Stock Photos, Images, Pictures, Photography at Diomedia](https://cache.diomedia.com/diocomp/01/AE/2E/comp/01AE-2E9M.jpg)
STOCK IMAGE, , 11942381, 01AE2E9M , Science Source - Search Stock Photos, Images, Pictures, Photography at Diomedia
![Ivan Pavlov (1849-1936), Russian physiologist, psychologist, physician, Nobel Prize Winner in Physiology or Medicine (1904), postage stamp, Russia, US Stock Photo - Alamy Ivan Pavlov (1849-1936), Russian physiologist, psychologist, physician, Nobel Prize Winner in Physiology or Medicine (1904), postage stamp, Russia, US Stock Photo - Alamy](https://c8.alamy.com/comp/WA1KBG/ivan-pavlov-1849-1936-russian-physiologist-psychologist-physician-nobel-prize-winner-in-physiology-or-medicine-1904-postage-stamp-russia-us-WA1KBG.jpg)
Ivan Pavlov (1849-1936), Russian physiologist, psychologist, physician, Nobel Prize Winner in Physiology or Medicine (1904), postage stamp, Russia, US Stock Photo - Alamy
![Ivan Pavlov, Russian physiologist, psychologist, and physician 1849-1936, Nobel Prize Winner 1904, Stock Photo, Picture And Rights Managed Image. Pic. BWI-BLWS177410 | agefotostock Ivan Pavlov, Russian physiologist, psychologist, and physician 1849-1936, Nobel Prize Winner 1904, Stock Photo, Picture And Rights Managed Image. Pic. BWI-BLWS177410 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/5e73bdddc972204a1fc3dfb53ec3d6ea/bwi-blws177410.jpg)
Ivan Pavlov, Russian physiologist, psychologist, and physician 1849-1936, Nobel Prize Winner 1904, Stock Photo, Picture And Rights Managed Image. Pic. BWI-BLWS177410 | agefotostock
![File:The Soviet Union 1991 CPA 6321A luxury block (Nobel Prize in Physiology or Medicine laureate Ivan Pavlov. Allegory 'Medicine').jpg - Wikimedia Commons File:The Soviet Union 1991 CPA 6321A luxury block (Nobel Prize in Physiology or Medicine laureate Ivan Pavlov. Allegory 'Medicine').jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/6/65/The_Soviet_Union_1991_CPA_6321A_luxury_block_%28Nobel_Prize_in_Physiology_or_Medicine_laureate_Ivan_Pavlov._Allegory_%27Medicine%27%29.jpg)