How can I extract all the titles from a particular XML file?

I have the following XML stream:

<?xml version="1.0"?>
<zs:searchRetrieveResponse xmlns:zs="http://www.loc.gov/zing/srw/">
     <zs:version>1.1</zs:version>
     <zs:numberOfRecords>1344</zs:numberOfRecords>
     <zs:records>
         <zs:record>
             <zs:recordSchema>info:srw/schema/1/dc-v1.1</ 
zs:recordSchema>
             <zs:recordPacking>xml</zs:recordPacking>
             <zs:recordData>
                 <srw_dc:dc xmlns:srw_dc="info:srw/schema/1/dc- 
schema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
xmlns="http://purl.org/dc/elements/1.1/" xsi:schemaLocation="info:srw/ 
schema/1/dc-schema http://www.loc.gov/z3950/agency/zing/srw/dc- 
schema.xsd">
                     <title>A ceremony unveiling the portrai.../title>
                     <creator>United States. Congress. House.  
Committee on Resources.</creator>
                     <subject>Hansen, James V.</subject>
                     <subject>Legislators</subject>
                 </srw_dc:dc>
             </zs:recordData>
             <zs:recordPosition>2</zs:recordPosition>
         </zs:record>

     </zs:records>
</zs:searchRetrieveResponse>


I also have this XSL:

<?xml version='1.0'?>
<xsl:stylesheet xmlns:xsl='http://www.w3.org/1999/XSL/Transform'
                 xmlns:zs="http://www.loc.gov/zing/srw/"
                 xmlns:srw_dc="info:srw/schema/1/dc-schema"
                 version='1.0'>

     <xsl:output method='html' omit-xml-declaration='yes' />

     <xsl:template match='/'>
         <p>Here is a list of records from your search:</p>
         <ul>
             <xsl:for-each select='//srw_dc:dc'>
                 <li><xsl:value-of select='title' /></li>
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
             </xsl:for-each>
         </ul>
     </xsl:template>

</xsl:stylesheet>


Unfortunately, my selecting of the title does not output anything.  
What am I doing wrong? Do I need to preface my title element with a  
namespace?


-- 
Eric Lease Morgan
Head, Digital Access and Information Architecture Department
University Libraries of Notre Dame

(574) 631-8604