TY  - BOOK
AU  - Couch,Leon W.
TI  - Digital and analog communication systems
SN  - 0023252405
PY  - 1983///
CY  - New York : , London : 
PB  - Macmillan ; , Collier Macmillan, 
KW  - Digital communications
KW  - Telecommunication systems
N1  - Includes bibliographical references and index
ER  -