<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31420502</termId><termName>lens boards</termName><termType>PT</termType><termNote><![CDATA[ Pieces of rigid material with central holes cut into them through which lenses may be mounted and attached to large format view or process cameras, enlargers, or other optical devices. ]]></termNote><termCreatedDate>2026-03-30 20:53:18</termCreatedDate><relation><relationType>UF</relationType><termId>31420503</termId><termName>lens board</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31386067</termId><termName>photographic processing equipment</termName><termType>PT</termType></relation></term>  </Zthes>