00295nam a2200133Ia 45000030006000000080041000060400015000471000017000622450025000792500010001042600018001145460012001320050017001440STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aHarnam Singh  aPrinciples of optics  aThird  bS.Chandc1987  aEnglish20220125170144.0