TY  - BOOK
AU  - Halsall, Fred
TI  - Introduction to data communications and computer networks
U1  - 001.64404 
PY  - 1985///
CY  - Wokingham, England
PB  - Addison-Wesley
KW  - Computer Networks
KW  - Data Transmission Systems
KW  - Computer Networks Protocols
ER  -