TY  - BOOK
AU  - Black, D. Vyless
TI  - Data communications and distributed networks
SN  - 8120309251
AV  - TK 5105.5 Bla 
PY  - 2000///
CY  - New Delhi
PB  - FT Prentice-Hall
KW  - COMMUNICATION
KW  - DATA COMMUNICATIONS--NETWORKS
ER  -