<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31428096</termId><termName>mass spectrographs</termName><termType>PT</termType><termNote><![CDATA[ Mass spectroscopes that record mass spectra on photographic plates. ]]></termNote><termCreatedDate>2026-03-30 20:55:28</termCreatedDate><relation><relationType>UF</relationType><termId>31428097</termId><termName>mass spectrograph</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31428098</termId><termName>spectrograph, mass</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31428099</termId><termName>spectrographs, mass</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31398332</termId><termName>mass spectroscopes</termName><termType>PT</termType></relation></term>  </Zthes>