<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31374198</termId><termName>clay blocks</termName><termType>PT</termType><termNote><![CDATA[ Building blocks comprising extruded clay shapes having substantial depth that may be laid as other masonry. ]]></termNote><termCreatedDate>2026-03-30 20:40:54</termCreatedDate><relation><relationType>UF</relationType><termId>31374199</termId><termName>blocks, clay</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31374200</termId><termName>clay block</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31343902</termId><termName>masonry units</termName><termType>PT</termType></relation></term>  </Zthes>