00301nam a2200121Ia 4500008004100000100002800041245002300069260004200092300000900134650001200143942000700155999001700162190216s9999||||xx |||||||||||||| ||und||  aAbbolt A F And Nelkon M 0aElementary Physics  bHeinemann Educational Books Ltdc1965  a167p  aPhysics  cBK  c32745d32745