00314nam a2200133Ia 4500008004100000020001500041041001200056082001100068100001600079245002900095260003600124300000800160650001200168221030s9999    xx            000 0 und d  a8121909090  aEnglish  a105.23  aC. L. Arora 0aB. Sc. Practical Physics  bS. Chand & Co.aNew Delhic2007  a683  aPhysics