TY  - BOOK
AU  - Carr ,Houston   H.
TI  - Data Communications and Network Security
SN  - 70636559
U1  - 005.8 CAR 
PY  - 2007///
CY  - New Delhi
PB  - Tata McGraw Hill
KW  - Computer Science
KW  - Computer science, information & general works
N1  - Includes Index
ER  -