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	mads.xsd"><authority><topic authority="http://www.serbi.ula.ve/tematres/vocab/">HORMIGÓN</topic></authority><related type="narrower"><topic>ASFALTO</topic></related><related type="narrower"><topic>HORMIGON ARMADO</topic></related><related type="narrower"><topic>HORMIGON ASFALTICO</topic></related><related type="narrower"><topic>HORMIGON DE ALTA RESISTENCIA</topic></related><related type="narrower"><topic>HORMIGÓN LIVIANO</topic></related><related type="narrower"><topic>HORMIGON PLASTICO</topic></related><related type="narrower"><topic>HORMIGÓN PREMEZCLADO</topic></related><related type="narrower"><topic>HORMIGON PRETENSADO</topic></related><related type="narrower"><topic>HORMIGÓN PROYECTADO</topic></related><related type="narrower"><topic>MEZCLADORAS DE HORMIGÓN</topic></related><related type="narrower"><topic>PAVIMENTOS</topic></related><related type="narrower"><topic>PRODUCTOS DE HORMIGON</topic></related><related type="other"><topic>CEMENTO</topic></related><related type="broader"><topic>MATERIALES DE CONSTRUCCION</topic></related><variant type="other"><topic>Concreto</topic></variant></mads>