<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31374812</termId><termName>ball clay</termName><termType>PT</termType><termNote><![CDATA[ A kind of ceramic clay of exceptionally small particle size and, consequently, very good plasticity. Used to impart plasticity to other clay bodies. ]]></termNote><termCreatedDate>2026-03-30 20:41:04</termCreatedDate><relation><relationType>UF</relationType><termId>31374813</termId><termName>clay, ball</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31344438</termId><termName>clay by composition or origin</termName><termType>PT</termType></relation></term>  </Zthes>