BF Skinner Foundation - Pigeon Ping Pong Clip bfskinnerfoundation 0:39 15 years ago 1 778 622 Скачать Далее
BF Skinner Foundation - Pigeon & Red Block bfskinnerfoundation 1:02 15 years ago 254 845 Скачать Далее
Drs. Robert Epstein & BF Skinner with Pigeons-Part 1 drrobertepstein 14:10 13 years ago 187 430 Скачать Далее