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	mads.xsd"><authority><topic authority="http://www.serbi.ula.ve/tematres/vocab/">ALEACIONES RESISTENTES AL CALOR</topic></authority><related type="narrower"><topic>ACERO TERMORRESISTENTE</topic></related><related type="broader"><topic>CROMO</topic></related><related type="broader"><topic>ALEACIONES</topic></related><related type="broader"><topic>MATERIALES RESISTENTES AL CALOR</topic></related><variant type="other"><topic>Metales resistentes al calor</topic></variant><variant type="other"><topic>Superaleaciones</topic></variant><variant type="other"><topic>Metales refractarios</topic></variant></mads>