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	mads.xsd"><authority><topic authority="http://www.serbi.ula.ve/tematres/vocab/">ELECTROACUSTICA</topic></authority><related type="narrower"><topic>DIAFONIA</topic></related><related type="narrower"><topic>DISPOSITIVOS DE ONDAS ACUSTICAS SUPERFICIALES</topic></related><related type="narrower"><topic>GRABADORAS MAGNETICAS</topic></related><related type="narrower"><topic>SISTEMAS DE INTERCOMUNICACION</topic></related><related type="broader"><topic>RADIO</topic></related><related type="broader"><topic>INGENIERÍA ELÉCTRICA</topic></related><related type="broader"><topic>ACUSTICA ARQUITECTONICA</topic></related><related type="broader"><topic>ACUSTICA EN MUSICA</topic></related><related type="broader"><topic>INGENIERIA ACUSTICA</topic></related><related type="broader"><topic>SONIDO</topic></related></mads>