TY  - BOOK
AU  - Duck,Michael
AU  - Read,Richard
TI  - Data communications and computer networks: for computer scientists and engineers 
SN  - 9788131726082
AV  - TK5105.5 .D89 2009
PY  - 2009///
CY  - Noida
PB  - Pearson
KW  - Computer networks
KW  - Osi
KW  - Computer network standard
ER  -