<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/schema/zthes-1.0.dtd">  <Zthes><term><termId>17887</termId><termName>TEORIA DE LA MODULACION</termName><termType>PT</termType><termLanguage>es-ES</termLanguage><termVocabulary>TESAURO DE MATERIAS DE SERBIULA</termVocabulary>	<termStatus>active</termStatus>	<termApproval>approved</termApproval>	<termSortkey>TEORIA DE LA MODULACION</termSortkey><termCreatedDate>TEORIA DE LA MODULACION</termCreatedDate><termModifiedDate>2015-03-02 09:48:51</termModifiedDate><relation><relationType>UF</relationType><termId>43299</termId><termName>Modulación, Teoría de la</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>946</termId><termName>TEORIA DE LA INFORMACION</termName><termType>PT</termType></relation></term>  </Zthes>