Lefrancois, Guy R. The lifespan / Guy R. Lefrancois. - 2nd ed. - Belmont, Calif. : Wadsworth Pub. Co., c1987. - xxiii, 664 p. : ill. ; 25 cm. Includes indexes. Bibliography: p. 593-643. ISBN: 0534074707 Subjects--Topical Terms: Developmental psychology. LC Class. No.: BF713 / .L44 1987 Dewey Class. No.: 155