| type (rdf:type) | GeodeticReferenceFrame (geosrs:GeodeticReferenceFrame) [x] |
| label (rdfs:label) | "Datum: Not specified (based on Plessis 1817 ellipsoid) (rdf:langString) (iso6391:en) |
| ellipse (geosrs:ellipse) | Plessis 1817 (geoepsg:Plessis1817) |
| primeMeridian (geosrs:primeMeridian) | Greenwich (geoepsg:Greenwich) |
| scope (geosrs:scope) | Not a valid datum. (xmls:string) |
| Is member (rdfs:member) of | GeodeticReferenceFrame Instances Collection (geoepsg:GeodeticReferenceFrame_collection) |
| Is datum (geosrs:datum) of | Unknown datum based upon the Plessis 1817 ellipsoid (geoepsg:4027) |