<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31380028</termId><termName>gas fields</termName><termType>PT</termType><termNote><![CDATA[ Areas that contain subterranean stores of natural gas. ]]></termNote><termCreatedDate>2026-03-30 20:42:30</termCreatedDate><relation><relationType>UF</relationType><termId>31380029</termId><termName>fields, gas</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31380030</termId><termName>gas field</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31380031</termId><termName>gasfield</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31380032</termId><termName>gasfields</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31350278</termId><termName>extracting complexes</termName><termType>PT</termType></relation></term>  </Zthes>