TY  - BOOK
AU  - Couch,Leon W.\\
TI  - Digital and analog communication system.\\\
SN  - 9788131725436
U1  - 001.54/C853d 
PY  - 0000///Pearson
PY  - 2009///
CY  - Noida
KW  - Communication
N1  - Index(727-749),bibliography(710-722)
ER  -