TY  - BOOK
AU  - CARLSON, A. BRUCE
AU  - CRILLY, PAUL B.
TI  - COMMUNICATION SYSTEMS
SN  - 0071210288
U1  - 621.382/CAR 
PY  - 2003///
CY  - NEW YORK.
PB  - MC GRAW HILL INTERNATIONAL, NEW YORK
ER  -