00277nam a2200121Ia 4500008004100000082000800041082001000049100002600059245003100085260001100116260001900127260000900146230118s9999||||xx |||||||||||||| ||und||  a537  bSEA/E  afrancis westonbsears 0aelectricity and magnetism   alondon  baddison-wesley  c1979