por Gesell, Arnold, 1880-1961 [autor].
por Gesell, Arnold, 1880-1961 [autor] | Ilg, Frances Lillian, 1902- [autor].
por Hurlock, Elizabeth Bergner, 1898- [autor] | Risso, Washington L [traductor] | Hurlock, Elizabeth Bergner, 1898-. Adolescent development.