<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>14113979</termId><termName>piedra de marla</termName><termType>PT</termType><termNote><![CDATA[ Pizarra calcárea o dolomítica y que se utiliza con caliza para fabricar el cemento Portland.
 ]]></termNote><termCreatedDate>2026-03-30 20:58:12</termCreatedDate><relation><relationType>BT</relationType><termId>14102335</termId><termName>roca arcillosa</termName><termType>PT</termType></relation></term>  </Zthes>