TY  - BOOK
AU  - Walford, Robert B. 
TI  - Network system architecture
SN  - 0-201-52409-0
U1  - 621.38215 
PY  - 1990///
CY  - Massachusetts
PB  - Addison-Wesley
KW  - Communications engineering
KW  - Communications network
N1  - inclides bibliographical references
ER  -