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	mads.xsd"><authority><topic authority="http://www.serbi.ula.ve/tematres/vocab/">HORNOS METALURGICOS</topic></authority><related type="narrower"><topic>Altos hornos</topic></related><related type="narrower"><topic>CUBILOTES</topic></related><related type="narrower"><topic>HORNOS CONTINUOS</topic></related><related type="narrower"><topic>MATERIALES REFRACTARIOS</topic></related><related type="narrower"><topic>Proceso de Bessemer</topic></related><related type="broader"><topic>HORNOS</topic></related></mads>