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mads.xsd"><authority><topic authority="http://roble.intecca.uned.es/tematres/lem/">Carreteras</topic></authority><related type="narrower"><topic>Autopistas</topic></related><related type="narrower"><topic>Calles</topic></related><related type="narrower"><topic>Caminos</topic></related><related type="narrower"><topic>Pavimentos</topic></related><related type="narrower"><topic>Autovías</topic></related><related type="other"><topic>Terraplenes</topic></related><related type="other"><topic>Viaductos</topic></related><related type="other"><topic>Transportes por carretera</topic></related><related type="other"><topic>Túneles</topic></related><related type="other"><topic>Puentes</topic></related><related type="broader"><topic>Vías terrestres</topic></related><related type="broader"><topic>Ingeniería civil</topic></related><related type="broader"><topic>Red viaria</topic></related></mads>