00356nam a2200121Ia 4500003000400000008004100004020001400045040000800059100001900067245009900086260003500185300001400220LDD181029s9999    xx            000 0 und d  a122823508  cLDD  aGholson, Barry 4aThe cognitive-development basis of human learningbstudiesin hypothesis testingcBarry Gholson  aNew YorkbAcademic Pressc1980  axiv,250p.