TY  - BOOK
AU  - Couch, Leon W
TI  - Digital and analog communication systems
SN  - 81-7808-328-0
U1  - 621.380413 COU 
PY  - 2001///
CY  - NEW DELHI
PB  - PEARSON EDUCATION
KW  - DIGITAL COMMUNICATION SYSTEMS.ANALOG COMMUNICATION SYSTEMS
ER  -