Halkara Biologiýa Olimpiadasy
Daşarky çykgytlar
[düzet | çeşmäni düzet]- Official IBO page
- On-line version of IBOs in English[permanent dead link]
- On-line version of IBOs in Russian Archived 2011-11-11 at the Wayback Machine
- British Biology Olympiad Archived 2012-02-28 at the Wayback Machine
- USA Biology Olympiad
- On-line версия IBO на русском языке Archived 2011-11-11 at the Wayback Machine