TY  - BOOK
AU  - Cannon 
AU  - Luecke, Gerald
TI  - Understanding communications systems 
SN  - 0895121662 
U1  - 621.380413 CAN 1984 
PY  - 1984///
CY  - Dallas
PB  - Texas Instruments
KW  - Telecommunication
N1  - Includes index
ER  -