Property:P809: Difference between revisions
Created a new Property: ECHA Substance Infocard ID, identifier of a chemical substance used by the European Chemicals Agency (ECHA) |
Created claim: instance of (P2): Wikidata property to identify substances (Q8807) |
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Property / instance of | |||
Property / instance of: Wikidata property to identify substances / rank | |||
Normal rank |