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	mads.xsd"><authority><topic authority="http://www.serbi.ula.ve/tematres/vocab/">CONSTRUCCIONES SUBTERRANEAS</topic></authority><related type="narrower"><topic>CONSTRUCCION DE TUNELES</topic></related><related type="narrower"><topic>CONSTRUCCIONES A PRUEBA DE BOMBAS</topic></related><related type="narrower"><topic>FUNDACIONES</topic></related><related type="narrower"><topic>METRO (MEDIO DE TRANSPORTE)</topic></related><related type="narrower"><topic>TUNELES</topic></related><related type="narrower"><topic>VIVIENDAS SEMIENTERRADAS</topic></related><related type="broader"><topic>CONSTRUCCIÓN</topic></related><related type="broader"><topic>MECANICA DE SUELOS</topic></related><related type="broader"><topic>MOVIMIENTOS DE TIERRAS</topic></related><related type="broader"><topic>ARQUITECTURA SUBTERRANEA</topic></related><related type="broader"><topic>EMPUJE DE TIERRAS</topic></related><related type="broader"><topic>MUROS DE CONTENCION</topic></related><variant type="other"><topic>Construcciones subsuperficiales</topic></variant><variant type="other"><topic>Estructuras subterráneas</topic></variant></mads>