TY  - BOOK
AU  -  Cannon, Don L
TI  - Understanding communications systems
SN  - 9780895121660
U1  - 621.38 CAN 
PY  - 1984///
CY  - Indianapolis, IN, USA
PB  - : H.W. Sams
KW  - Telecommunication
KW  - Don L. Cannon
KW  - Electric Signal
KW  - Radio
KW  - Communication
ER  -