TY  - GEN
AU  - Housley,Trevor
TI  - Data Communications and Teleprocessing Systems
T2  - 25336
SN  - 0131973681
U1  - 621.38041 HOU 
PY  - 1979///
CY  - New Delhi
PB  - Prentice-Hall
KW  - Computer networks
KW  - Data transmission systems
ER  -