<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31394885</termId><termName>flat mirrors</termName><termType>PT</termType><termNote><![CDATA[ Term generally applied to mirrors that have flat reflective surfaces, as opposed to those with a convex or concave surface. ]]></termNote><termCreatedDate>2026-03-30 20:46:10</termCreatedDate><relation><relationType>UF</relationType><termId>31394886</termId><termName>flat mirror</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31394887</termId><termName>mirrors, flat</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31394888</termId><termName>mirrors, plane</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31394889</termId><termName>plane mirrors</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31355148</termId><termName>mirrors by form</termName><termType>PT</termType></relation></term>  </Zthes>