<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31383536</termId><termName>airfields</termName><termType>PT</termType><termNote><![CDATA[ Areas prepared for the landing and takeoff of aircraft; may or may not be provided with associated buildings, equipment, or other installations. ]]></termNote><termCreatedDate>2026-03-30 20:43:30</termCreatedDate><relation><relationType>UF</relationType><termId>31383537</termId><termName>air fields</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31383538</termId><termName>airfield</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31383539</termId><termName>fields, air</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31383540</termId><termName>fields, landing</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31383541</termId><termName>landing fields</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31352341</termId><termName>air transportation spaces</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31351427</termId><termName>airports</termName><termType>PT</termType></relation></term>  </Zthes>