TY - BOOK AU - Shelly, Gary B. AU - Cashman, Thomas J. AU - Serwatka, Judy A. TI - Business data communications: introductory concepts and techniques SN - 8131503321 U1 - 004.6 SHE 23 PY - 2004/// CY - Australia PB - Cengage KW - Business KW - Data processing KW - Communication systems KW - Local area networks (Computer networks) KW - Data transmission systems N1 - Includes bibliographical references and index ER -