TY  - BOOK
AU  - Irvine, James and Harle, David 
TI  - Data communications and networks 
SN  - 81-265-0765-9 
U1  - 005.71 IRV  
PY  - 2006///
CY  - John wiley and sons inc. 
PB  - New York 
KW  - DATA COMMUNICATION
ER  -