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	mads.xsd"><authority><topic authority="http://www.serbi.ula.ve/tematres/vocab/">SONIDO</topic></authority><related type="narrower"><topic>ABSORCION DEL SONIDO</topic></related><related type="narrower"><topic>ACUSTICA ARQUITECTONICA</topic></related><related type="narrower"><topic>ACUSTICA EN MUSICA</topic></related><related type="narrower"><topic>ACÚSTICA SUBMARINA</topic></related><related type="narrower"><topic>AUDICION</topic></related><related type="narrower"><topic>BIOACUSTICA</topic></related><related type="narrower"><topic>ELECTROACUSTICA</topic></related><related type="narrower"><topic>FONETICA</topic></related><related type="narrower"><topic>ORIENTACION (FISIOLOGIA)</topic></related><related type="narrower"><topic>ULTRASONICO</topic></related><related type="narrower"><topic>VIBRACION</topic></related><related type="broader"><topic>MUSICA</topic></related><related type="broader"><topic>RADIACION</topic></related><related type="broader"><topic>NEUMATICA</topic></related><related type="broader"><topic>FISICA MATEMATICA</topic></related><related type="broader"><topic>MECANICA CONTINUA</topic></related><related type="broader"><topic>FISICA</topic></related></mads>