00332nam a2200133Ia 4500008004100000020001500041041001200056082001600068100001600084245004500100260003300145300000800178650001200186221030s9999    xx            000 0 und d  a8121909090  aEnglish  a105.23bAro  aC. L. Arora 0aB. Sc. Practical Physicscby C. L. Arora  bS.Chand Co.aNew Delhic1999  a629  aPhysics