TY  - BOOK
AU  - Friend,George E.
TI  - Understanding data communications
AV  - TK5105 .U53 1984
U1  - 621.38220 
PY  - 1984///
CY  - Dallas
PB  - Texas Instruments
KW  - Data communication Computer communication Data communication
KW  - Business Business
KW  - Data communication
ER  -