TY  - BOOK
AU  - Killen,Harold B.
TI  - Modern electronic communication techniques
SN  - 0023636009
AV  - TK5101 .K44 1985
U1  - 621.38/0413�19 
PY  - 1985///
CY  - New York
PB  - Macmillan
KW  - Telecommunication
KW  - Electronics
ER  -