Das, J. Review of digital communication : state of the art in digital signalling, digital switching, and data networks / by J Das - 2nd ed. - New Delhi : New Age International Publishers, - xiv, 563 pages ; 25 cm. Includes bibliographical references and index, ISBN: 9788122434118 Subjects--Topical Terms: Digital communications Dewey Class. No.: 621.380 / DAS/R