00335nam a2200133Ia 4500008004100000020001500041041001200056082001600068100001600084245004500100260003600145300000800181650001200189221030s9999    xx            000 0 und d  a8121909090  aEnglish  a105.23bAro  aC. L. Arora 0aB. Sc. Practical Physicscby C. L. Arora  bS. Chand & Co.aNew Delhic2000  a629  aPhysics