TY  - BOOK
AU  - Roddy,Dennis
AU  - Coolen,John
TI  - Electronic communications
SN  - 013312083X
AV  - TK5105 .R56 1995 
PY  - 1995///
CY  - Englewood Cliffs, NJ
PB  - Prentice Hall Career and Technology
KW  - Telecommunication
N1  - Includes index
ER  -