00337nam a2200133Ia 4500008004100000020000700041040003000048082001400078100002100092245002900113260003800142300001100180650001200191190302s9999||||xx |||||||||||||| ||und||  c30  aKharagpur College Library  a537bC349  aP. K. Charaborty  aElectricity And Magnetic  bModern Book AgencyaKolkatac1977  a448 p.  aPhysics