TY  - BOOK
AU  - Black,Uyless D.
TI  - Data networks: concepts, theory, and practice 
SN  - 0131984667 :
PY  - 1989///
CY  - Englewood Cliffs, N.J.
PB  - Prentice Hall
KW  - Computer networks
KW  - Data transmission systems
N1  - Recommended text : MA267/ MA483/ MAP61 (Maths & Computer Science)
ER  -