TY  - BOOK
AU  - Couch ii,Leon W..
TI  - Digital and analog communication systems / 
SN  - 8178083280
U1  - 621.382 
PY  - 2001///
CY  - New Delhi : 
PB  - Pearson Education , 
KW  - DIGITAL COMMUNICATION
N1  - NULL
ER  -