000			00329nam a2200133Ia 4500
008			200615s9999||||xx |||||||||||||| ||und||
020			_a9788122427677
082			_a621.3 _bNET-D
100			_aD.ROY CHOUDHRY
245		0	_aNETWORKS AND SYSTEMS
250			_a2ND
260			_anew delhi _bNEW AGE INTERNATIONAL _c2018
942			_cBK
999			_c29675 _d29675