00340nam a2200133Ia 4500003000400000008004100004020001900045040000800064100002200072245006000094260003000154300001500184365000700199LDD181029s9999    xx            000 0 und d  a008043455XcUS  cLDD  aSchnotz, Wolfgang 0aNew perspectives on conceptual changecWolfgang Schnotz  aAmsterdambPergamonc1999  axxiv, 322p  bUS