<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31370790</termId><termName>middle oil</termName><termType>PT</termType><termNote><![CDATA[ Polymerized stand oil of increased viscosity, created by heat in the absence of oxygen. ]]></termNote><termCreatedDate>2026-03-30 20:40:00</termCreatedDate><relation><relationType>UF</relationType><termId>31370791</termId><termName>carbolic oil</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31370792</termId><termName>oil, carbolic</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31370793</termId><termName>oil, middle</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31340006</termId><termName>stand oil</termName><termType>PT</termType></relation></term>  </Zthes>