<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31375031</termId><termName>opaque red glass</termName><termType>PT</termType><termNote><![CDATA[ An opaque glass whose red color is generally caused by cuprous oxide crystals. ]]></termNote><termCreatedDate>2026-03-30 20:41:08</termCreatedDate><relation><relationType>UF</relationType><termId>31375032</termId><termName>glass, opaque red</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31375033</termId><termName>opaque glass, red</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31375034</termId><termName>red opaque glass</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31344443</termId><termName>glass by composition or origin</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31411996</termId><termName>haematinum</termName><termType>PT</termType></relation></term>  </Zthes>