<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31352072</termId><termName>undersea cordilleras</termName><termType>PT</termType><termNote><![CDATA[ Undersea mountain systems, including subordinate ranges, basins, and plateaus.  ]]></termNote><termCreatedDate>2026-03-30 20:35:01</termCreatedDate><relation><relationType>UF</relationType><termId>31352073</termId><termName>cordilleras, undersea</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31352074</termId><termName>undersea cordillera</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31324173</termId><termName>undersea landforms</termName><termType>PT</termType></relation></term>  </Zthes>