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Graph: http://wumm.uni-leipzig.de:8891/sparql
tc:CertificationSystem (EasyRdf\Resource)
→ rdf:type → od:TopLevelConcept, skos:Concept
→ skos:prefLabel → "Zertifikationssystem"@de, "Certification System"@en, "Система сертификации"@ru
tc:QualifyingSystem (EasyRdf\Resource)
→ od:includes → tc:CertificationSystem