: ChemicalUnithttp://www.opengis.net/spec/muddi/id/concept/ Create a prefix for http://www.opengis.net/spec/muddi/id/concept/ Hit Enter to save Double click to create a prefix | dct:source | : 23-024.htmlhttps://docs.ogc.org/is/23-024/ Create a prefix for https://docs.ogc.org/is/23-024/ Hit Enter to save Double click to create a prefix |