TY  - BOOK
AU  - Halsall, Fred.
TI  - Data communications, computer networks, and open systems / Fred Halsall
SN  - 020142293X (alk. paper)
U1  - 004.6 HAL 
CY  - Wokingham, England ; Reading, Mass. :  Addison-Wesley Pub. Co., c1996.
KW  - Data transmission systems.               Computer networks.               Local area networks (Computer networks)               Computer network protocols
ER  -