000			00348nam a2200145Ia 4500
008			130629s9999 xx 000 0 und d
082			_a535.2 SUB-O
100			_aSubrahmanyam, N;Lal , Brij
245			_aOptics
250			_a23
260			_bS Chand And Company ( Pvt) Ltd _c2007 _aNew Delhi
300			_a668
650			_aPhysics
942			_cBK
999			_c25461 _d25461