Who trained dogs to salivate at the ring of a bell?
Ivan P. Pavlov Иван Петрович Павлов Pavlovian reflex I. P. Pavlov Ivan pavlov I. Pavlov Ivan Pavlov Ivan Petrovitch Pavlov Ivan Petrovich Pavlov Pavlovian response mechanism
иван петрович павлов i p pavlov ivan petrovich pavlov i pavlov ivan pavlov ivan petrovitch pavlov pavlovian response mechanism pavlovian reflex ivan p pavlov
ivan pavlov
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Ivan Pavlov