<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/schema/zthes-1.0.dtd">  <Zthes><term><termId>4927</termId><termName>CIENCIA DE LOS MATERIALES</termName><termType>PT</termType><termLanguage>es</termLanguage><termVocabulary>Vocabulario Latinoamericano de Ciencias Sociales</termVocabulary>	<termStatus>active</termStatus>	<termApproval>approved</termApproval>	<termSortkey>CIENCIA DE LOS MATERIALES</termSortkey><termCreatedDate>2012-03-26 21:57:52</termCreatedDate><relation><relationType>BT</relationType><termId>2181</termId><termName>INGENIERIA</termName><termType>PT</termType></relation><relation><relationType>BT</relationType><termId>5455</termId><termName>INVESTIGACION; CIENCIA</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>2742</termId><termName>PROPIEDADES FISICAS</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>2956</termId><termName>PROPIEDADES QUIMICAS</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>5024</termId><termName>SUPERCONDUCTORES</termName><termType>PT</termType></relation></term>  </Zthes>