TY  - BOOK
AU  - Held, Gilbert
TI  - Understanding Data Communications
SN  - 81-7635-319-1
U1  - 004.6/H474u 
PY  - 1999///
CY  - New Delhi
PB  - Techmedia
KW  - Communication
N1  - Department of Computer Science & Engineering
N2  - Data Communications, Understanding
ER  -