00307nam a2200133Ia 4500008004100000100003500041245001100076250001200087260003000099300000800129650001200137942000700149999001700156190216s9999||||xx |||||||||||||| ||und||  aSubrahmanyanan. N  And Brijlal 0aOptics  a1st Ed.  bSulthan  Chand&Sonsc1997  a717  aPhysics  cBK  c33339d33339