TY  - BOOK
AU  - Couch, Leon W.
TI  - Digital and analog communication systems
SN  - 0130812234
AV  - D3993 
U1  - 621.382 22
PY  - 2001///
CY  - USA
PB  - Prentice Hall
N1  - Includes bibliographical references and index
ER  -