TY  - BOOK
AU  - Sexton,Conor
TI  - Beyond the mainframe: a guide to open computer systems 
SN  - 0750619023
PY  - 1995///
CY  - Oxford
PB  - Butterworth-Heinemann
KW  - Computer networks
KW  - Computer network protocols
KW  - Data transmission system
ER  -