TY  - BOOK
AU  - Shay,William A.
TI  - Understanding data communications and networks
SN  - 053495054X
AV  - TK5105 .S49 1999
U1  - 004.6 21
PY  - 2001///
CY  - Pacific Grove, Calif.
PB  - PWS
KW  - Data transmission systems
KW  - Computer networks
N1  - Includes bibliographical references and index
ER  -