00479 a2200157 4500 8120328469 004.6 5643 5643 Gupta, Prakash C. Data communications and computer networks Prakash C. Gupta New Delhi: Prence-Hall of India Pvt. Ltd,. 2006. xxvii, 800 p. : ill. ; 24 cm. Includes Index 1.Computer networks.2.Data transmission system. BK 004.6 GUP 9490 9490 0 0 0 0 NFIC CL CL DACOM 2009-05-19 Star Books 654.75 0 004.6 GUP SEECS009379 2012-11-14 2017-01-05 BK