TY  - BOOK
AU  - Freeman,Roger L.
TI  - Practical data communications
SN  - 0471393029 (cloth : alk. paper)
AV  - TK5105 .F72 2001 .F72 2001
U1  - 004.6 21
PY  - 2001///
CY  - New York
PB  - John Wiley
ER  -