Internetwork Expert Inc.

year of pub­li­ca­ti­onISBNauthor(s)title
2007978-0-9767763-0-7Brian Dennis · Brian McGahanCCIE Routing & Switching. Lab Workbook Volume I
  ''978-0-9767763-1-4Brian Dennis · Brian McGahanCCIE Routing & Switching. Lab Workbook Volume II
  ''978-0-9767763-3-8   ''CCIE Routing & Switching. Lab Workbook Volume III