00243nam a2200109Ia 4500008004100000041000800041082001200049100001400061245002500075260002500100300000800125211209s1999    xx            000 0 und d  aeng  a530 VER  aVERMA H C  aCONCEPTS OF PHYSICS   bBHARATI BHAVANc1999  a462