<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31309443</termId><termName>hydroelectric power</termName><termType>PT</termType><termNote><![CDATA[ Power produced by converting the potential power of natural stream flow into energy, usually electricity. ]]></termNote><termCreatedDate>2026-03-30 20:23:20</termCreatedDate><relation><relationType>UF</relationType><termId>31309444</termId><termName>hydraulic resources</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31309445</termId><termName>power, hydroelectric</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31309446</termId><termName>water-power</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31309447</termId><termName>waterpower</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31300104</termId><termName>energy resources</termName><termType>PT</termType></relation></term>  </Zthes>