000			00386nam a2200145Ia 4500
008			220217s9999||||xx |||||||||||||| ||und||
020			_a978259005589
082			_a005.43 DHA
100			_aDhamdhere D. M
245		0	_aOperating systems
250			_a3rd
260			_aTata mcgraw hill company Ltd _bNew Delhi _c2012
300			_aXX, 828p. _b499
650			_aOperating systems
999			_c183712 _d183712