TY  - BOOK
AU  - GIBSON (Jerry D).
TI  - Principles of digital and analog communications
SN  - 0029463009
U1  - 621.380413 GIBP 
PY  - 1990///
CY  - New York.
PB  - Macmillan Publishers Ltd.
KW  - Principles
KW  - of
KW  - digital
KW  - communications
KW  - and
KW  - analog
ER  -