Certificate archive
| Name | Owner | Period | ABC | Certificate |
|---|---|---|---|---|
| ConventionSource.com | Conference & Travel Publications | February 2020 | View | |
| ConventionSource.com | Conference & Travel Publications | February 2019 | View | |
| ConventionSource.com | Conference & Travel Publications | February 2018 | View | |
| ConventionSource.com | Conference & Travel Publications | February 2016 to February 2017 | View | |
| ConventionSource.com | Conference & Travel Publications | February 2015 to February 2016 | View | |
| ConventionSource.com | Conference & Travel Publications | February 2015 | View | |
| ConventionSource.com | Conference & Travel Publications | February 2014 | View | |
| ConventionSource.com | Conference & Travel Publications | February 2013 | View | |
| ConventionSource.com | Conference & Travel Publications | February 2012 | View | |
| Worldwide Convention Venues Directory | Conference & Travel Publications | February 2011 | View | |
| Worldwide Convention Centres Directory (WCCD) | Conference & Travel Publications | February 2010 | View | |
| Worldwide Convention Centres Directory (WCCD) | Conference & Travel Publications | Jan end 2009 | View | |
| Worldwide Convention Centres Directory (WCCD) | Conference & Travel Publications | Jan end 2008 | View |
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