000			00330nam a2200145Ia 4500
008			210219s9999||||xx |||||||||||||| ||und||
082			_a535 _bG411O
100			_aGhatak J.
245		0	_aOptics. _cGhatak J.
250			_a2nd
260			_aNew Delhi _bTata McGraw-Hill _c1993
300			_a694p
942			_cBK
950			_o535 G411O
999			_c2658 _d2658