TY  - BOOK
AU  - Housley, Trevor 
TI  - Data communications & teleprocessing systems
SN  - 817800075-X
U1  - 384.3 H817d2 
PY  - 1987///
CY  - Hyderabad
PB  - BS Publications
KW  - Computer networks
KW  - Data transmission systems
ER  -