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Le frison ("frysk") aux Pays-Bas  
Le frison en Allemagne: le frison oriental  
Le frison en Allemagne: le frison septentrional  


North Frisian
Nordfriesische Wörterbuchstelle (Christian-Albrechts-Universität Kiel ).

West Frisian
A lot of information, esp. links in the field of arts, politics, society, business, education. Also personal homepages, photographs, general information. (Mostly in Dutch and Frisian, partly in English).
Pre-eminent research institute on Frisian language, culture and history. Information on research departments, publications etc.