<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>3683</termId><termName>Acero</termName><termType>PT</termType><termNote><![CDATA[ Véase además los nombres de las distintas clases de aceros: Acero austenítico ]]></termNote><termCreatedDate>2014-09-15 19:38:50</termCreatedDate><relation><relationType>BT</relationType><termId>3680</termId><termName>Aleaciones</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>3686</termId><termName>Acero austenítico</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>3684</termId><termName>Acero inoxidable</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>3685</termId><termName>Barras de acero</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>3646</termId><termName>Construcciones metálicas</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>3645</termId><termName>Hierro</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>6787</termId><termName>Tubos de acero</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>33564</termId><termName>Industria siderúrgica</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>3667</termId><termName>Siderurgia</termName><termType>PT</termType></relation></term>  </Zthes>