<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31471123</termId><termName>eighteen-carat gold</termName><termType>PT</termType><termNote><![CDATA[ Gold which has 18 parts of gold to six parts of alloying metal. ]]></termNote><termCreatedDate>2026-03-30 21:06:48</termCreatedDate><relation><relationType>UF</relationType><termId>31471124</termId><termName>18 carat gold</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31471125</termId><termName>18-carat gold</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31471126</termId><termName>eighteen carat gold</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31471127</termId><termName>gold, eighteen-carat</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31457226</termId><termName>gold alloy by quality</termName><termType>PT</termType></relation></term>  </Zthes>