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Jul 1, 2023–Oct 27, 2023Expired Helmholtz Metadata Collaboration / HMC Public / Helmholtz ontology base (HOB) / Helmholtz Digitisation Ontology
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started on Oct 30, 2023Open Helmholtz Metadata Collaboration / HMC Public / Helmholtz ontology base (HOB) / Helmholtz Digitisation Ontology