por Skinner, B. F. (Burrhus Frederic), 1904-1990 [autor] | Fibla, Jordi [traductor] | Vaughan, Margaret E [autor] | Skinner, B. F. (Burrhus Frederic), 1904-1990. Enjoy old age.
por Meichenbaum, Donald [autor] | Fibla, Jordi [traductor] | Meichenbaum, Donald. Stress innoculation training.