TY  - BOOK
AU  - Black, Uyless D.
AU  - Black, Uyless D.
TI  - Data communications and distributed networks
SN  - 8120309251
AV  - 005.71 BLA 1993 
U1  - 005.71 BLA 1993 
PY  - 1993///
CY  - New Delhi
PB  - Prentice-Hall
KW  - Computer Engineering
ER  -