<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>14050756</termId><termName>[materiales por composición]</termName><termType>PT</termType><termCreatedDate>2026-03-30 20:20:10</termCreatedDate><relation><relationType>BT</relationType><termId>14049641</termId><termName>materiales</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>14054399</termId><termName>material inorgánico</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>14050579</termId><termName>material orgánico</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>14054400</termId><termName>combinaciones de material orgánico e inorgánico</termName><termType>PT</termType></relation></term>  </Zthes>