I think a responsible for the project should be nominated and that priorities should be set.
And point by point, make sure that all the content is available in 3 languages (it will ask a lot of efforts of translation though...).
Everything that regards geography, geology and such should be quite easy to agree upon in every language (more than history).
And point by point, make sure that all the content is available in 3 languages (it will ask a lot of efforts of translation though...).
Everything that regards geography, geology and such should be quite easy to agree upon in every language (more than history).