TY  - GEN
AU  - Black, Uyless D
TI  - Data communications and distributed networks/3rd ed
SN  - 81-203-0925-1
U1  - 681.324  
PY  - 1997///
CY  - New Delhi
PB  - Prentice Hall
KW  - 681.324
KW  - networks
KW  - Computer networks
KW  - Data communication
ER  -