TY  - GEN
AU  - Halsall, Fred
TI  - Data communications, computer networks and open systems
SN  - 020142293X
U1  - 004.6 
PY  - 1996///
CY  - Massachusetts
PB  - Addison - Wesley
KW  - INTERFACING AND COMMUNICATIONS
KW  - COMPUTER SCIENCE
ER  -