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- http://id.loc.gov/vocabulary/iso639-1.html (Komplettdownload (N-Triples): http://id.loc.gov/static/data/vocabularyiso639-1.nt.zip)
- http://id.loc.gov/vocabulary/iso639-2.html (Komplettdownload (N-Triples): http://id.loc.gov/static/data/vocabularyiso639-2.nt.zip)
Sprachkompetenz (Fremdsprachen)
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