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	mads.xsd"><authority><topic authority="http://www.serbi.ula.ve/tematres/vocab/">TUBERIAS PARA AGUA</topic></authority><related type="narrower"><topic>ARIETES HIDRAULICOS</topic></related><related type="narrower"><topic>GOLPE DE ARIETE</topic></related><related type="narrower"><topic>TUBERIAS DE HORMIGON</topic></related><related type="broader"><topic>PLOMERIA</topic></related><related type="broader"><topic>DISTRIBUCION DEL AGUA</topic></related><related type="broader"><topic>TUBERIAS</topic></related><variant type="other"><topic>Agua--Tuberías</topic></variant><variant type="other"><topic>Tuberías de distribución</topic></variant></mads>