00336nam a2200109Ia 450000500170000000800410001705000220005824500780008025000080015826000340016665000260020020251229184319.0251229s9999    xx            000 0 und d  aBF 724 .U62 1976  0aUnderstanding adolescenceb Current developments in adolescent psychology  a3rd  aBostonbAllyn and Baconc1976  aAdolescent Psychology