TY  - GEN
AU  - Carr,Houston H.
AU  - Snyder,Charles A.
TI  - Data communications and network security 
SN  - 0071102973
U1  - 004.6 
PY  - 2007///
CY  - Boston
PB  - McGraw-Hill Irwin
KW  - Computer networks
KW  - Security measures
KW  - Wireless communication systems
ER  -