TY  - BOOK
AU  - Shay ,William  A.
TI  - Understanding Data Communication & Networks
SN  - 9812400508
U1  - 004.6 SHA 
PY  - 1999///
CY  - London
PB  - Thomas lear
KW  - Computer Science
KW  - Computer science, information & general works
N1  - Includes Index
ER  -