<?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="http://AATesaurus.cultura.gencat.cat/aat/getty_es">[piedras por función]</topic></authority><related type="narrower"><topic>gema industrial</topic></related><related type="narrower"><topic>adoquín</topic></related><related type="narrower"><topic>piedra de construcción</topic></related><related type="narrower"><topic>piedra de cordón</topic></related><related type="narrower"><topic>piedra monumental</topic></related><related type="narrower"><topic>baldosa</topic></related><related type="broader"><topic>piedra</topic></related></mads>