- <xsl:choose>
- <xsl:when test="circulations/circulation/availabiltyDate">
- <xsl:value-of select="circulations/circulation/availabiltyDate"/>
- </xsl:when>
- <xsl:otherwise>PAZPAR2_NULL_VALUE</xsl:otherwise>
- </xsl:choose>
- </xsl:when>
- <xsl:otherwise>PAZPAR2_NULL_VALUE</xsl:otherwise>