<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31441021</termId><termName>arch dams</termName><termType>PT</termType><termNote><![CDATA[ Dams that resist water pressure by use of the arch principle and having, in plan, the form of a single arch abutted by natural rock formation. ]]></termNote><termCreatedDate>2026-03-30 20:58:52</termCreatedDate><relation><relationType>UF</relationType><termId>31441022</termId><termName>arch dam</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31441023</termId><termName>dams, arch</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31415431</termId><termName>dams by form</termName><termType>PT</termType></relation></term>  </Zthes>