Khanna, V. K. Digital communications/ by V. K. Khanna.- - New Delhi: S. Chan and Company, c1999.. - xxi, 406 p. : ill. ; 26 cm. Includes index. Bibliography: p. 390-392. ISBN: 8121931029 Source: B-36923 LCCN: 86061451 Subjects--Topical Terms: Digital communications. LC Class. No.: TK5103.7 / .K42 1999 Dewey Class. No.: 621.38