por Schaffer, H. Rudolph [autor] | La Fuente, Enrique [traductor] | Schaffer, H. Rudolph. Growth of sociability.
por Schaffer, H. Rudolph [autor] | Cazenave Tapie Isoard, Eliane [traductor].
por Schaffer, H. Rudolph [autor] | Lafuente, Enrique [traductor] | Schaffer, H. Rudolph. Child's entry into a social world.
por Schaffer, H. Rudolph [autor].