TY  - BOOK
AU  - Shay, William A.
TI  - Understanding data communications and networks
SN  - 0534383173
PY  - 2004///
CY  - Belmont, CA
PB  -  Thomson-Brooks/Cole
KW  - Data transmission systems
KW  - Computer networks
N1  - Includes bibliographical references, glossary and index
ER  -