TY  - BOOK
AU  - Miles,June
TI  - Data communications: fundamentals 
SN  - 0030021480
AV  - TK5105 .M546 1986
U1  - 384.3�19 
PY  - 1986///
CY  - New York
PB  - Holt, Rinehart, and Winston
KW  - Data transmission systems
ER  -