TY  - BOOK
AU  - Black,Uyless D.
TI  - Computer networks : protocols, standards and interfaces
SN  - 0131660918
U1  - TK/5105.5 
PY  - 1987///
CY  - Englewood Cliffs
PB  - Prentice-Hall.
KW  - Computer networks.
ER  -