00277nam a2200097Ia 4500008004100000040003800041100002300079245002200102260003800124300001700162211215s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aBruner, Jerome S . 0aStudy of Thinking  bJohn Wiley & SonsaNew yorkc1958  aXii, 338p p.