000			00320nam a2200157Ia 4500
100			_aChakraborty/P
650			_aOperating systems
942			_cBK
366			_f20
245			_aOperating Systems
260			_bJaico _c2011
082			_a5.43 _bCHA
300			_a1016
546			_aENGLISH _cComputers
999			_c34429 _d34429