00310nam a2200121Ia 4500008004100000020001500041041001200056100001600068245004500084260003600129300000800165650001500173221030s9999    xx            000 0 und d  a8121909090  aEnglish  aC. L. Arora 0aB. Sc. Practical Physicscby C. L. Arora  bS. Chand & Co.aNew Delhic2014  a693  aBB Physics