000			00383nam a2200145Ia 4500
008			220217s9999||||xx |||||||||||||| ||und||
020			_a0-07-463090-3
082			_a005.43 DAS
100			_aDas, Sumitabha _91470
245		0	_aUnix: conepts and applications
250			_a2nd
260			_aTata mcgraw hill _bNew Delhi _c2002
300			_b220
650			_aOperating systems
999			_c169377 _d169377