por Leveton, Eva [autor] | Angulo, Pilar [traductor] | Leveton, Eva. Adolescent crisis.
por Pullias, Earl V [autor] | Joung, James Douglas [autor] | Angulo, Pilar [traductor].
por Jones, Kenneth L. (Kenneth Lester), 1905- [autor] | Angulo, Pilar [traductor] | Byer, Curtis O [autor] | Shainberg, Louis W [autor] | Jones, Kenneth L. (Kenneth Lester), 1905-. Marriage and reproduction.