00271nam a2200097Ia 4500008004100000082001500041100001700056245004500073260004700118300000800165190709s9999    xx            000 0 und d  a136.7354 G  aGran, John M 0aHow to understand and teach teen - agers  aMinneapolisbT S Denison and Companyc1958  a229