look up muenchian grouping in google but

<xsl:key name="m" match="eih:ManureTypeStructure" use="gr:ManureTypeCode" />

<xsl:template match="eih:ManureTypeStructure">
 <xsl:if test="generate-id()=generate-id(key('m',gr:ManureTypeCode))">
   i'm the first with this code
....

David

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