00782cam a2200313 i 4500 000045165 4293 20030225163244.0 010220|1998 vm 000 eng IRC IRC IRC eng 004.6 WA-J Walrand, Jean. Communication networks : a first course / Jean Walrand. 2nd ed. Boston : WCB/McGraw-Hill, 1998. xv, 336p. : ill. Communication network. Computer networks. DUT From the UDN01 Monograph Printed language Mạng thư viện Đại học Đà Nẵng