+ <pz:metadata type="id">
+ <xsl:value-of select="marc:controlfield[@tag='001']"/>
+ </pz:metadata>
+
+ <xsl:for-each select="marc:datafield[@tag='010']">
+ <pz:metadata type="lccn">
+ <xsl:value-of select="marc:subfield[@code='a']"/>
+ </pz:metadata>
+ </xsl:for-each>
+