<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
	mads.xsd"><authority><topic authority="https://confrides.cpd.ua.es/tematres1/vocab/">Fibras ópticas</topic></authority><related type="broader"><topic>1. ENCABEZAMIENTOS DE MATERIA</topic></related><variant type="other"><topic>Óptica de las fibras</topic></variant> <note xml:lang="">En listado de USE figura al contrario </note></mads>