<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31372375</termId><termName>opus quadratum</termName><termType>PT</termType><termNote><![CDATA[ Ancient Roman ashlar masonry technique adopted from Etruscan stone construction; squared, cut blocks laid in regular courses.  ]]></termNote><termCreatedDate>2026-03-30 20:40:25</termCreatedDate><relation><relationType>UF</relationType><termId>31372376</termId><termName>quadratum, opus</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31341655</termId><termName>masonry facing</termName><termType>PT</termType></relation></term>  </Zthes>