000			00338nam a2200133Ia 4500
008			230222s9999 xx 000 0 und d
082			_a005.43
100			_aBalakrishna Prasad P
245		0	_aOperating Systems and Systems Programming
250			_a2
260			_bScitech Publishers, Chennai _c2012
650			_aCOMPUTER
942			_cBK
999			_c22627 _d22627