[Noteworthy date: on the 75th anniversary of the discovery of conditioned reflexes (I. P. Pavlov)].
D003214:Conditioning, Classical; D049672:History, 19th Century; D049673:History, 20th Century; D011603:Psychophysiology / Q000266:history*; D012425:Russia (Pre-1917)
Znamenatel'naia data (k 75-letiiu otkrytiia uslovnykh refleksov).