TY  - BOOK
AU  - Tom Carpenter
TI  - Ccna Cisco Certified Network Associate Voice Study Guide (Exams 640-460 & 642-436) (Certification Press)(Pbk) Pbk
SN  - 9780071744409
U1  - 4.692 
PY  - 2011///
PB  - Mcgraw Hill
KW  - Computer scienceience
ER  -