TY  - BOOK
AU  - Shay, William A.
TI  - Understanding data communications and networks / 
SN  - 053495054x
AV  - TK5105 
U1  - 004.6 
PY  - 1999///]
CY  - Pacific Grove : 
PB  - Brooks/Cole Publishing Company, 
KW  - Data transmission systems
KW  - Computer networks
N1  - Includes bibliographical references, glossary and index
ER  -