<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31344359</termId><termName>copper oxalate</termName><termType>PT</termType><termNote><![CDATA[ A rare light blue corrosion product found as a contributing factor to the greenish chromatic degradation of azurite in mural paintings, and in the patina of outdoor bronze monuments such as the horses of San Marco in Venice. ]]></termNote><termCreatedDate>2026-03-30 20:32:52</termCreatedDate><relation><relationType>UF</relationType><termId>31344360</termId><termName>oxalate, copper</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31320447</termId><termName>corrosion</termName><termType>PT</termType></relation></term>  </Zthes>