Conditioned reflexes; an investigation of the physiological activity of the cerebral cortex 2026-02-16T08:08:59+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Pavlov, Ivan Petrovich, 1849-1936 (Dover Publications, 1960)