Gupta, Prakash C. Data communication/ Prakash C. Gupta. - New Delhi : Prentice-Hall of India, 1999 - xiii, 475 p. : ill. ; 24 cm. Include index ISBN: 9.7881203112e+012 Subjects--Topical Terms: Data transmission systems. ; Computer networks. Dewey Class. No.: 4.6 / GUD