TY  - BOOK
AU  - Held,Gilbert
AU  - Sarch,Ray
TI  - Data communications: a comprehensive approach 
SN  - 0076000036
AV  - TK 5 105 .H425 1983 .H425 1983
U1  - 004.6 20
PY  - 1983///
CY  - New York, N.Y.
PB  - Data Communications
KW  - Data transmission systems
N1  - Includes index; Bibliography: p. xviii
ER  -