00283nam a2200097Ia 4500008004100000082001500041100002300056245004800079260004500127300001300172190709s9999    xx            000 0 und d  a136.71 B57  aBlair, Arthur Witt 0aGrowth and development of the preadolescent  aNew YorkbAppleton - Century - Croc1951  aviii,221