TY  - BOOK
AU  - Proakis, John, G and Salehi, Masoud 
TI  - Fundamentals of communication systems 
SN  - 9788131705735
U1  - 621.3822 PRO  
PY  - 2007///
CY  - Pearson education of asia 
PB  - New Delhi 
KW  - Communication engineering
ER  -