TY  - BOOK
AU  - Frenzel,  Louis E.
TI  - Principles of electronics communication systems 
SN  - 978-0-07-066755-6
U1  - 621.382 
PY  - 2008///
CY  - New Delhi
PB  - Tat Macgraw
KW  - Electrical Electronics Communication
ER  -