-<xsd:schema elementFormDefault="qualified" attributeFormDefault="unqualified" targetNamespace="http://www.witsml.org/schemas/131/addendum/combo" version="1.3.1">
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-<xsd:annotation>
 <xsd:documentation> These types represent numeric quantities with a unit of measure implemented as a uom attribute. The units are gathered into single quantity class which represents a group of units. The unit symbols appropriate for the class are captured as enumerated lists. The implementation of this is to develop a type for each uom class that is a union of a standard list, the unknown value, and the Other: extension. Additional files will contain these structures. </xsd:documentation>
 </xsd:annotation>
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 <xsd:include schemaLocation="typ_quantityClass_prodVol.xsd"/>
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-<xsd:complexType name="modulusOfCompressionMeasure" final="#all">
-<xsd:simpleContent>
-<xsd:extension base="witsml:abstractMeasure">
 <xsd:attribute name="uom" type="witsml:modulusOfCompressionUom" use="required"/>
 </xsd:extension>
 </xsd:simpleContent>
 </xsd:complexType>
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-<xsd:complexType name="workMeasure">
-<xsd:simpleContent>
-<xsd:extension base="witsml:abstractMeasure">
 <xsd:attribute name="uom" type="witsml:workUom" use="optional"/>
 </xsd:extension>
 </xsd:simpleContent>
 </xsd:complexType>
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 </xsd:schema>