TY  - GEN
AU  - Simmonds, Andrew
TI  - Data communications and transmission principles: an introduction
SN  - 0333646894
AV  - TK5105 .S58 1998
PY  - 1998///
CY  - London
PB  - Macmillan
KW  - Data transmission systems
N1  - Includes index
ER  -