TY  - BOOK
AU  - Freeman,Roger L.
TI  - Practical data communications
SN  - 0471310212
PY  - 1995///
CY  - New York : 
PB  - John Wiley and Sons, 
KW  - Data transmission systems
N1  - "A Wiley-Interscience publication."; Includes bibliographical references and index
ER  -