<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/schema/zthes-1.0.dtd">  <Zthes><term><termId>3805</termId><termName>Geoquímica</termName><termType>PT</termType><termLanguage>es</termLanguage><termVocabulary>INDICES DE MATERIAS</termVocabulary>	<termStatus>active</termStatus>	<termApproval>approved</termApproval>	<termSortkey>Geoquímica</termSortkey><termNote label="Scope"><![CDATA[ <p>Se puede usar con un subencabezamiento geográfico.</p> ]]></termNote><termNote label="History"><![CDATA[ <p>Revisada el 8 de noviembre de 2019</p> ]]></termNote><termNote label="Source"><![CDATA[ <p>CDU:<strong> 550.4</strong></p> ]]></termNote><termNote label="Source"><![CDATA[ <p>Fuente: <strong>USE</strong></p> ]]></termNote><termCreatedDate>Geoquímica</termCreatedDate><relation><relationType>BT</relationType><termId>3800</termId><termName>Área 02. Geoquímica general</termName><termType>PT</termType></relation><relation><relationType>BT</relationType><termId>12502</termId><termName>Area 03. Geografía general física</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>3803</termId><termName>Biogeoquímica</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>3814</termId><termName>Mineralogía determinativa</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>3755</termId><termName>Ciencias de la tierra</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>3749</termId><termName>Geografía física</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>3815</termId><termName>Petrografía</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>3816</termId><termName>Rocas</termName><termType>PT</termType></relation></term>  </Zthes>