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	mads.xsd"><authority><topic authority="http://www.serbi.ula.ve/tematres/vocab/">SISTEMAS DE COMUNICACION POR MICROONDAS</topic></authority><related type="narrower"><topic>COMUNICACIONES FERROVIARIAS</topic></related><related type="narrower"><topic>RADIOTELEFONO</topic></related><related type="narrower"><topic>Televisión de circuito cerrado.</topic></related><related type="broader"><topic>SISTEMAS DE TELECOMUNICACION</topic></related><related type="broader"><topic>RADIO DE ONDA CORTA</topic></related><related type="broader"><topic>SISTEMAS DE INTERCOMUNICACION</topic></related><related type="broader"><topic>TELECOMUNICACIONES</topic></related><related type="broader"><topic>TELEVISION</topic></related><variant type="other"><topic>Microondas--Sistemas de comunicación</topic></variant></mads>