TY  - BOOK
AU  - Rettke,Mari
TI  - Practical data communications
SN  - 0070676674
AV  - TK5105 .R48 1990
U1  - 384.3 20
PY  - 1990///
CY  - New York
PB  - Mitchell McGraw-Hill
KW  - Data transmission systems
KW  - Programmed instruction
KW  - Computer networks
N1  - Includes index
ER  -