000 00326nam a2200145Ia 4500
008 180611s9999||||xx |||||||||||||| ||und||
041 _aen
082 _a535.2
100 _aSINGH,S.P.
245 0 _aPragati's Optics
250 _aRev.ed.
260 _bMeerut. Pragati Prakashan
_c1998
300 _axii,560p.
942 _cLL
999 _c14528
_d14528