<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/schema/zthes-1.0.dtd">  <Zthes><term><termId>4496</termId><termName>HIDROLOGIA</termName><termType>PT</termType><termLanguage>es</termLanguage><termVocabulary>Vocabulario Latinoamericano de Ciencias Sociales</termVocabulary>	<termStatus>active</termStatus>	<termApproval>approved</termApproval>	<termSortkey>HIDROLOGIA</termSortkey><termCreatedDate>2012-03-26 21:57:38</termCreatedDate><relation><relationType>BT</relationType><termId>4477</termId><termName>CIENCIAS DE LA TIERRA</termName><termType>PT</termType></relation><relation><relationType>BT</relationType><termId>5451</termId><termName>HIDROLOGIA; AGUA</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>4559</termId><termName>HIDROGEOLOGIA</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>4577</termId><termName>HIDROGRAFIA</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>4579</termId><termName>HIDROMETRIA</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>4480</termId><termName>PRECIPITACION</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>4479</termId><termName>GEOGRAFIA FISICA</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>3394</termId><termName>RIOS</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>4576</termId><termName>RED HIDROLOGICA</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>4575</termId><termName>CUENCAS FLUVIALES</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>4405</termId><termName>AGUA</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>4520</termId><termName>OCEANOGRAFIA</termName><termType>PT</termType></relation></term>  </Zthes>