See also:
- Le Balkan International - - Site of the joint efforts of Le Balkan France Society and Le Balkan Bulgaria Foundation on the conservation of endangered and rare ecosystems, natural habitats, animal and plant species. Site is in French and English.
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- WWF European Freshwater Programme - - The European Freshwater Programme of WWF, the conservation organisation, focuses on restoration, conservation and sustainable development of Europe's rivers and wetlands.
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