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	mads.xsd"><authority><topic authority="http://www.serbi.ula.ve/tematres/vocab/">INSTRUMENTOS ASTRONOMICOS</topic></authority><related type="narrower"><topic>Astrolabios</topic></related><related type="narrower"><topic>Espectrógrafos</topic></related><related type="narrower"><topic>Espectroheliógrafos</topic></related><related type="narrower"><topic>ESPECTROSCOPIOS</topic></related><related type="narrower"><topic>FOTOGRAFIA ASTRONOMICA</topic></related><related type="narrower"><topic>HELIOSTATO</topic></related><related type="narrower"><topic>Sextantes</topic></related><related type="narrower"><topic>TELESCOPIOS</topic></related><related type="broader"><topic>INSTRUMENTOS CIENTIFICOS</topic></related><related type="broader"><topic>INSTRUMENTOS DE FISICA</topic></related><related type="broader"><topic>INSTRUMENTOS OPTICOS</topic></related><variant type="other"><topic>Astronomía--Aparatos e instrumentos</topic></variant><variant type="other"><topic>Astronomía--Instrumentos</topic></variant><variant type="other"><topic>Interferómetro radioeléctrico</topic></variant></mads>