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@@ -26,3 +26,57 @@ ep-core:hasSetOfAllPartsOfType
 ep-core:thousand_barrel
       rdf:type ep-core:Scale , owl:FunctionalProperty , owl:DatatypeProperty ;
       rdfs:label "thousand barrel"^^xsd:string .
+
+ep-core:MeasureOfFlowOfMaterial
+      rdf:type ep-core:PropertySpace , rdfs:Class ;
+      rdfs:label "measure of flow of material"^^xsd:string ;
+      rdfs:subClassOf owl:Class .
+
+ep-core:VolumeFlowRateAt15degC1atm
+      rdf:type rdfs:Class , ep-core:PropertySpace ;
+      rdfs:label "volume flow rate at 15 degrees C 1 atmosphere"^^xsd:string ;
+      rdfs:subClassOf ep-core:MeasureOfFlowOfMaterial .
+
+ep-core:VolumeFlowRateAt1degC1atm
+      rdf:type rdfs:Class , ep-core:PropertySpace ;
+      rdfs:label "volume flow rate at 1 degrees C 1 atmosphere"^^xsd:string ;
+      rdfs:subClassOf ep-core:MeasureOfFlowOfMaterial .
+
+ep-core:VolumeFlowRateAt60degF1atm
+      rdf:type rdfs:Class , ep-core:PropertySpace ;
+      rdfs:label "volume flow rate at 60 degrees F 1 atmosphere"^^xsd:string ;
+      rdfs:subClassOf ep-core:MeasureOfFlowOfMaterial .
+
+ep-core:atmosphere
+      rdf:type owl:FunctionalProperty , owl:DatatypeProperty , ep-core:Scale ;
+      rdfs:domain ep-core:Pressure ;
+      rdfs:label "atmosphere"^^xsd:string .
+
+ep-core:barrel_day-1
+      rdf:type ep-core:Scale , owl:DatatypeProperty , owl:FunctionalProperty ;
+      rdfs:domain ep-core:VolumetricFlowRate ;
+      rdfs:label "barrel day-1"^^xsd:string .
+
+ep-core:centimetre
+      rdf:type owl:DatatypeProperty , owl:FunctionalProperty , ep-core:Scale ;
+      rdfs:domain ep-core:Length ;
+      rdfs:label "centimetre"^^xsd:string .
+
+ep-core:fahrenheit
+      rdf:type owl:FunctionalProperty , owl:DatatypeProperty , ep-core:Scale ;
+      rdfs:domain ep-core:Temperature ;
+      rdfs:label "fahrenheit"^^xsd:string .
+
+ep-core:inch_64
+      rdf:type owl:DatatypeProperty , owl:FunctionalProperty , ep-core:Scale ;
+      rdfs:domain ep-core:Length ;
+      rdfs:label "inch/64"^^xsd:string .
+
+ep-core:metre3_hour-1
+      rdf:type ep-core:Scale , owl:DatatypeProperty , owl:FunctionalProperty ;
+      rdfs:domain ep-core:VolumetricFlowRate ;
+      rdfs:label "metre3 hour-1"^^xsd:string .
+
+ep-core:thousand_barrel
+      rdf:type ep-core:Scale , owl:FunctionalProperty , owl:DatatypeProperty ;
+      rdfs:label "thousand barrel"^^xsd:string .
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