Gupta , Prakash C. Data communications and computer network [[Book] /] Prakash C. Gupta . - New Delhi : Prentice - Hall of india private limited, 2006. - 800 p : ill ; 26 cm. All age. ISBN: 8120328469 Subjects--Topical Terms: computer network.Data communications. Dewey Class. No.: 004.6 National Library of Medicine Call No.: 004.6 / G D