000			00349nam a2200157Ia 4500
008			170101s1981 xx 000 0 und d
082			_a535 S92T
100			_aSUBRAHMANYAM, N.
245		0	_aText book of optics
250			_a11th.ed.
260			_bNew Delhi _c1981
300			_a594p
650			_aOPTICS
653			_aOPTICS
942			_2ddc _cB
999			_c82513 _d82513