Communication networks : fundamental concepts and key architectures / Albert Leon-Garcia, Indra Widjaja. Leon-Garcia, Alberto. Widjaja, Indra, 1960- Telecommunication systems. Computer networks. Computer network architectures. TK5101 .L46 2000 621.3821 21 LEC Includes bibliographical references and index. Boston : McGraw-Hill, c2000. c2000. 2000 Text xxiii, 867 p. : eng McGraw-Hill series in computer science