Black, Uyless D. Data communications and distributed networks / Uyless D. Black. - 3rd ed. - New Delhi : Prentice-Hall Of india, c1993. - xvi, 426 p. : ill.; 24 cm. Includes index. ISBN: 9788120309258 Subjects--Topical Terms: Telecommunication systems. Dewey Class. No.: 0001.644404 / BLD