TY  - BOOK
AU  - Couch, Leon W.
TI  - Digital and analog communication systems
SN  - 9789332518583
AV  - 21372-21377 
U1  - 621.382 22
PY  - 2014///
CY  - New Delhi
PB  - Pearson Education
N1  - Includes index
ER  -