<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/schema/zthes-1.0.dtd">  <Zthes><term><termId>43500</termId><termName>ACRILONITRILO</termName><termType>PT</termType><termLanguage>es-ES</termLanguage><termVocabulary>TESAURO DE MATERIAS DE SERBIULA</termVocabulary>	<termStatus>active</termStatus>	<termApproval>approved</termApproval>	<termSortkey>ACRILONITRILO</termSortkey><termCreatedDate>ACRILONITRILO</termCreatedDate><termModifiedDate>2015-02-05 10:46:43</termModifiedDate><relation><relationType>UF</relationType><termId>51804</termId><termName>AN (Químico)</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>51805</termId><termName>Cianido de vinil</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>51806</termId><termName>Cianoetileno</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>51807</termId><termName>Propenenitrilo</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>43499</termId><termName>NITRILOS</termName><termType>PT</termType></relation></term>  </Zthes>