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SkoHub-Vocabs
OER in der Praxis
http://w3id.org/openeduhub/vocabs/oeh-topics/b3911f32-db29-4e77-8053-6981d1e46ef3
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Definition
https://diversitaet.blogspot.com/2019/06/oer-offene-bildungsressourcen-oer-in.html