TY  - BOOK
AU  - Halsall, Fred
TI  - Data communications, computer networks and open systems
SN  - 0-201-56506-4
U1  - 004.6 
PY  - 1992///
CY  - Wokingham
PB  - Addison-Wesley
KW  - Computer network
KW  - Computer science
KW  - Data communication
N1  - Includes bibliographical references and index; na
ER  -