<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31480809</termId><termName>hydraulic limestone</termName><termType>PT</termType><termNote><![CDATA[ Limestone containing silica and alumina and yielding a lime that will harden under water. ]]></termNote><termCreatedDate>2026-03-30 21:09:27</termCreatedDate><relation><relationType>UF</relationType><termId>31480810</termId><termName>cement stone</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31480811</termId><termName>limestone, hydraulic</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31480812</termId><termName>stone, cement</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31478204</termId><termName>argillaceous limestone</termName><termType>PT</termType></relation></term>  </Zthes>