000			00394nam a2200169Ia 4500
008			201023s9999||||xx |||||||||||||| ||und||
100			_aGurjeet Singh
245		0	_aOperating System
250			_a1ST
260			_aDelhi _bUDH _c2011
300			_a495
365			_b295
650			_aComputer Science.
942			_cTB
999			_c4378 _d4378