00322nam a2200109Ia 4500008004100000040003800041100001800079245003400097260004600131300002300177653001200200211215s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aAsimov, Issac 0aUnderstanding physics, vol ii  bGeorge Allen and Unwin Ltd.aLondonc1966  av.2 p. : [9], 251p  aPhysics