TY  - BOOK
AU  - Black,Uyless D., x
AU  - x
TI  - Data communications and distributed networks: x
SN  - 8120305251
U1  - 001.5544/B627d 
PY  - 1999///
CY  - New Delhi
PB  - Prentice Hall of India
KW  - Communication
N1  - Index
ER  -