ISBN 9781597492034 books & textbook
2008 VoIP and Video Conferencing Professional Reference CD
Chaffin, Larry Brashars, Joshua Long, Johnny Gough, Michael Daehne, Markus Porter CISSP CCNP CCDA CCS, Thomas
Syngress /2007-09-25 CD-ROM
isbn-10: 1597492035 / isbn-13: 9781597492034
