+ <xslt:value-of select="document('metadata')//*[@rdf:about=$IDENTIFIER]/nfo:hasHash[@nfo:hashAlgorithm='CRC32']/@nfo:hashValue"/>
+ </xslt:attribute>
+ <xslt:attribute name="书社:identifier">
+ <xslt:value-of select="$IDENTIFIER"/>
+ </xslt:attribute>
+ <xslt:attribute name="书社:mtime">
+ <xslt:value-of select="document('metadata')//*[@rdf:about=$IDENTIFIER]/nfo:fileLastModified"/>