TY  - GEN
AU  - Hughes, Larry,
TI  - Introduction to data communications: a practical approach 
SN  - 0867207450
AV  - TK5105 
U1  - 004.6 
PY  - 1997///
CY  - Sudbury, Mass.
PB  - Jones and Bartlett
KW  - Data transmission systems
N1  - Includes bibliographical references and index
ER  -