<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/schema/zthes-1.0.dtd">  <Zthes><term><termId>4805</termId><termName>Movimiento ondulatorio, Teoría del</termName><termType>TT</termType><termLanguage>es</termLanguage><termVocabulary>INDICES DE MATERIAS</termVocabulary>	<termStatus>active</termStatus>	<termApproval>approved</termApproval>	<termSortkey>Movimiento ondulatorio, Teoría del</termSortkey><termCreatedDate>Movimiento ondulatorio, Teoría del</termCreatedDate><relation><relationType>RT</relationType><termId>4803</termId><termName>Interferencia (Luz)</termName><termType>PT</termType></relation></term>  </Zthes>