<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/schema/zthes-1.0.dtd">  <Zthes><term><termId>50952</termId><termName>ACIDO METACRILICO</termName><termType>TT</termType><termLanguage>es-ES</termLanguage><termVocabulary>TESAURO DE MATERIAS DE SERBIULA</termVocabulary>	<termStatus>active</termStatus>	<termApproval>approved</termApproval>	<termSortkey>ACIDO METACRILICO</termSortkey><termCreatedDate>ACIDO METACRILICO</termCreatedDate><termModifiedDate>2015-01-28 07:35:19</termModifiedDate><relation><relationType>UF</relationType><termId>50955</termId><termName>Acido alfa-metilacrílico</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>50956</termId><termName>Acido metilacrílico</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>50957</termId><termName>Acido metilpropenoico</termName><termType>ND</termType></relation><relation><relationType>NT</relationType><termId>50951</termId><termName>METACRILATO DE METILO</termName><termType>PT</termType></relation></term>  </Zthes>