TY  - BOOK
AU  - Couch, Leon W.
TI  - Digital and analog communication system
SN  - 0131424920
AV  - TK5101.C6 2007 
PY  - 2007///
CY  - New Jersey
PB  - Pearson education
KW  - Telecommunicatuion system
KW  - Digital communications
ER  -