TY  - BOOK
AU  -  COUCH W LEON II
TI  - Digital and Analog communication systems
SN  - 9.788131725436
AV  - TK 5101 .C69 2007  
PY  - 2007///.
CY  - India, 
PB  -  pearson
KW  - Digital
N1  - Includes index
ER  -