00377nam a2200121Ia 450000500170000000800410001702000150005805000190007310000160009224500800010826000340018865000330022220251229175739.0251229s9999    xx            000 0 und d  a996690106x  aLB 1028.35.O34  aOkere, Mark 0aPhysics educatio b a  textbook of methods for physics teacherscMark Okere  aNjorobEgerton univ EMCc1996  aTeaching -- Aids And Devices