TY  - BOOK
AU  - SHAY, WILLIAM A.
TI  - UNDERSTANDING DATA COMMUNICATION AND NETWORKS
SN  - 9812400508
U1  - 005.71/SHA 
PY  - 2003///
CY  - PACIFICE GROVE.
PB  - BROOKS/COLE THOMASON LEARNING., PACIFICE GROVE.
ER  -