TY  - BOOK
AU  - Sarch,Ray
TI  - Basic guide to data communications
SN  - 0076070263 :
U1  - 384.3 20
PY  - 1990///
CY  - New York, NY
PB  - McGraw-Hill
KW  - Data transmission systems
KW  - Computer networks
N1  - Includes index
ER  -