TY  - GEN
AU  - Hooper, Howard
AU  - Howard Hooper
TI  - CCNP security VPN 642-648 official cert guide
SN  - 9781587204470
U1  - 005.8076 
PY  - 2012///
CY  - USA
PB  - Cisco Press
KW  - Telecommunications engineers--Certification
ER  -