00338nam a2200133Ia 4500008004100000041001200041082001600053100001600069245004200085260003900127300000800166650001200174700001800186221030s9999    xx            000 0 und d  aEnglish  a105.23bSin  aS. P. Singh 0aOpticscby S. P. Singh, J. P. Agarwal  bPragati PrakashanaNew Delhic2000  a559  aPhysics  aJ. P. Agarwal