<dis:dissertation xmlns:xsi="http://www.w3.org/2001/XML" xsi:schemaLocation="info:ofi/fmt:xml:xsd:dissertation http://www.openurl.info/registry/docs/info:ofi/fmt:xml:xsd:dissertation" xmlns:dis="info:ofi/fmt:xml:xsd:dissertation"><dis:authors><dis:author><dis:aulast>Rayson</dis:aulast><dis:aufirst>P.</dis:aufirst></dis:author><dis:author><dis:aulast>Smith</dis:aulast><dis:aufirst>N.</dis:aufirst></dis:author></dis:authors><dis:date>2006-06</dis:date><dis:title>The key domain method for the study of language varieties</dis:title></dis:dissertation>