TY  - BOOK
AU  - Gentle,Edgar C.
TI  - Data communications in business: an introduction 
AV  - HF5548.2 .A72 1965
U1  - 651.7 
PY  - 1965///
CY  - New York
PB  - American Telephone and Telegraph
KW  - Data communication Computer communication Data communication
KW  - Business Business
KW  - Data communication
ER  -