000			00338nam a2200157Ia 4500
008			230818s9999 xx 000 0 und d
020			_a9788192294413
082			_a535 _bSIN/O
100			_aSingh, R.B.
245		0	_aOptics
250			_a1st ed.
260			_bLucknow,N.A.Prakashan
300			_a126
650			_aPhysics
942			_cBK
999			_c275 _d275