TY  - GEN
AU  - Simmonds, Andrew
TI  - Data communications and transmission principles: : an introduction
SN  - 0333646894
AV  - TK5105 .S56 1997
PY  - 1997///
CY  - New York
PB  - Palgrave Macmillan
KW  - Data transmission systems
N1  - Includes index and glossary
ER  -