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- http://vocabularies.unesco.org/thesaurus/concept1914 1
- http://vocabularies.unesco.org/thesaurus/concept1915 3
- http://vocabularies.unesco.org/thesaurus/concept1916 1
- http://vocabularies.unesco.org/thesaurus/concept1917 1
- http://vocabularies.unesco.org/thesaurus/concept1918 1
- http://vocabularies.unesco.org/thesaurus/concept1919 1
- http://vocabularies.unesco.org/thesaurus/concept1920 1
- http://vocabularies.unesco.org/thesaurus/concept1921 2
- http://vocabularies.unesco.org/thesaurus/concept1922 1
- http://vocabularies.unesco.org/thesaurus/concept1923 1
- http://vocabularies.unesco.org/thesaurus/concept1924 1
- http://vocabularies.unesco.org/thesaurus/concept1925 1
- http://vocabularies.unesco.org/thesaurus/concept1926 1
- http://vocabularies.unesco.org/thesaurus/concept1927 1
- http://vocabularies.unesco.org/thesaurus/concept1928 1
- http://vocabularies.unesco.org/thesaurus/concept1929 3
- http://vocabularies.unesco.org/thesaurus/concept1930 1
- http://vocabularies.unesco.org/thesaurus/concept1931 1
- http://vocabularies.unesco.org/thesaurus/concept1932 1
- http://vocabularies.unesco.org/thesaurus/concept1933 3