000 00278nam a2200109Ia 4500
008 190829s9999||||xx |||||||||||||| ||und||
100 _aMathur, D. S.
245 0 _aOptics: Geometrical And Physical
260 _bRam Chand & Co.
_aDelhi
_c1973
650 _aOptics
942 _cBK
999 _c11959
_d11959