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 pavlovian response mechanism i pavlov pavlovian reflex ivan petrovitch pavlov ivan pavlov ivan petrovich pavlov i p pavlov ivan p pavlov
ivan pavlov
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Ivan Pavlov