TY  - BOOK
AU  - CARLSON BRUCE A
AU  - CRILLY PAUL B
AU  - RUTLEDGE JANET C
TI  - COMMUNICATION SYSTEMS
SN  - 0-07-121028-8
U1  - 621.382 CAR 
CY  - BOSTON
KW  - COMMUNICATION
KW  - COMSYS
ER  -