000			00303nam a22001337a 4500
020			_a9788120348646
082			_a004.6
100			_aPRAKASH GUPTA
245			_aDATA COMMUNICATIONS AND COMPUTER NETWORKS
250			_a2 ND
260			_aNEW DELHI _bPHI _c2014
300			_aXXVIII, 848 P
942			_cBK
999			_c7971 _d7971