<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31420832</termId><termName>etching knives</termName><termType>PT</termType><termNote><![CDATA[ Utensils used to prepare printing surfaces by incising designs on the matrix surface. Also used to subtract tones and layers from photographs. ]]></termNote><termCreatedDate>2026-03-30 20:59:51</termCreatedDate><relation><relationType>UF</relationType><termId>31420833</termId><termName>etching knife</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31420834</termId><termName>knife, etching</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31420714</termId><termName>printing surface preparation tools</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31371543</termId><termName>etching</termName><termType>PT</termType></relation></term>  </Zthes>