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mads.xsd"><authority><topic authority="http://roble.intecca.uned.es/tematres/lem/">Ríos</topic></authority><related type="narrower"><topic>Deltas</topic></related><related type="other"><topic>Inundaciones</topic></related><related type="other"><topic>Ecología fluvial</topic></related><related type="other"><topic>Navegación interior</topic></related><related type="other"><topic>Pesca de agua dulce</topic></related><related type="other"><topic>Sedimentos fluviales</topic></related><related type="other"><topic>Estuarios</topic></related><related type="other"><topic>Canales</topic></related><related type="other"><topic>Riberas</topic></related><related type="broader"><topic>Aguas superficiales</topic></related><related type="broader"><topic>Vías acuáticas</topic></related><variant type="other"><topic>Potamología</topic></variant><variant type="other"><topic>Arroyos</topic></variant><variant type="other"><topic>Afluyentes</topic></variant><variant type="other"><topic>Riachuelos</topic></variant><variant type="other"><topic>Corrientes de agua</topic></variant> <note xml:lang="es"><![CDATA[ Véase además los nombres de los distintos ríos: Tajo ]]></note></mads>