Aberrant Alphabetizing.

I have run into something (embarrassingly) unexpected, using sort to alphabetize
book titles to be printed in a catalog. The sort is working pefectly for most of
the books. But here are 5 examples of incorrect sorting (that were, sigh,
pointed out to me by the client):

Computers at Risk: Safe Computing in the Information Age
     (should be 2nd)

Computer Science and Artificial Intelligence
     (should be 1st)

Effectiveness of the United States Advanced Battery Consortium as a
Government-Industry Partnership
     (should be 5th)

Effective Services for Young Children: Report of a Workshop
     (should be 4th)

Effect of Environment on Nutrient Requirements of Domestic Animals
     (should be 3rd)


---- The XSLT -----------------
<xsl:template match="book">
     <xsl:for-each select=".">
          <xsl:sort select="title"/>
          <xsl:apply-templates select="title"/>
     </xsl:for-each>
</xsl:template>
-------------------------------

---- The XML ------------------
<book>
     <title>Computers at Risk: Safe Computing in the Information Age</title>
</book>
<book>
     <title>Computer Science and Artificial Intelligence</title>
</book>
<book>
     <title>Effectiveness of the United States Advanced Battery Consortium as a
Government-Industry Partnership</title>
</book>
<book>
     <title>Effective Services for Young Children: Report of a Workshop</title>
</book>
<book>
     <title>Effect of Environment on Nutrient Requirements of Domestic
Animals</title>
</book>
-------------------------------


Can anyone help me understand why the alphabetizing doesn't come out as
expected?



 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list