000			00320nam a2200145Ia 4500
008			221221s9999 xx 000 0 und d
020			_a74601385
041			_aENG
082			_a535 _bGHA/O
100			_aGhatak, Ajoy
245		0	_aOptics
250			_a2
260			_aNew Delhi _bTata Mc Graw_Hill _c1992
942			_cBK
999			_c24709 _d24709