<?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">materiales de residuo</topic></authority><related type="narrower"><topic>ceniza</topic></related><related type="narrower"><topic>carbonilla</topic></related><related type="narrower"><topic>escoria de hulla</topic></related><related type="narrower"><topic>cagafierro</topic></related><related type="narrower"><topic>hollín</topic></related><related type="narrower"><topic>frass</topic></related><related type="narrower"><topic>residuo</topic></related><related type="narrower"><topic>compost</topic></related><related type="narrower"><topic>productos de corrosión</topic></related><related type="narrower"><topic>particulate matter (traducció pendent)</topic></related><related type="broader"><topic>materiales por origen</topic></related></mads>