TY  - BOOK
AU  - Carr,Houston H, Snyder, Charles A
AU  - x
TI  - Data communications and network security: x
SN  - 0070636559
U1  - 005.8/C257d 
PY  - 2007///
CY  - New Delhi
PB  - Tata McGraw-Hill
KW  - Computer network-Security measures
KW  - Computer science
N1  - Includes
ER  -