TY  - BOOK
AU  - Shay,William A.
TI  - Understanding data communications and networks
SN  - 053495054X
AV  - TK 5105 S529U 1999
PY  - 1999///
CY  - Pacific Grove, Calif.
PB  - PWS
KW  - DATA TRANMISSION SYSTEMS
KW  - COMPUTER NETWORKS
N1  - Includes bibliographical reference and index
ER  -