TY  - BOOK
AU  - Hallsall,F
TI  - Data communications computer networks and open systems
U1  - 001.64404 23
PY  - 2000///, [Tenth Indian imprint 2005 ]
CY  - Delhi
PB  - Pearson
KW  - Computer Network -- Management.
KW  - Data Transmission -- System
N1  - Includes index
ER  -