<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/schema/zthes-1.0.dtd">  <Zthes><term><termId>2228</termId><termName>Compuestos nitroaromáticos</termName><termType>PT</termType><termLanguage>es-ES</termLanguage><termVocabulary>MATERIAS BUA</termVocabulary>	<termStatus>active</termStatus>	<termApproval>approved</termApproval>	<termSortkey>Compuestos nitroaromáticos</termSortkey><termCreatedDate>Compuestos nitroaromáticos</termCreatedDate><relation><relationType>UF</relationType><termId>2229</termId><termName>Compuestos aril nitro</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>2230</termId><termName>Compuestos organonitrogenados aromáticos</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>26</termId><termName>1. ENCABEZAMIENTOS DE MATERIA</termName><termType>TT</termType></relation><relation><relationType>RT</relationType><termId>2231</termId><termName>Compuestos aromáticos</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>644</termId><termName>Compuestos organonitrogenados</termName><termType>PT</termType></relation></term>  </Zthes>