TY - GEN AU - Azrin, N. AU - Hutchinson, R. TI - Conditioning of the aggressive behavior of pigeons by a fixed-interval schedule of reinforcement KW - Depósito de Retaguarda KW - 0220 - Depósito de Retaguarda UR - https://catalogo.ispa.pt/opac/biblioteca/localizacao_doc/dr.htm ER -