<?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_en">copper alloy</topic></authority><related type="narrower"><topic>brass</topic></related><related type="narrower"><topic>copper-nickel alloy</topic></related><related type="narrower"><topic>copper-silicon alloy</topic></related><related type="narrower"><topic>bronze</topic></related><related type="narrower"><topic>copper-beryllium alloy</topic></related><related type="narrower"><topic>copper-aluminum alloy</topic></related><related type="narrower"><topic>tumbaga</topic></related><related type="narrower"><topic>pinchbeck</topic></related><related type="narrower"><topic>Prince&apos;s metal</topic></related><related type="narrower"><topic>shakudo</topic></related><related type="narrower"><topic>Nordic gold</topic></related><related type="narrower"><topic>Nuremberg gold</topic></related><related type="other"><topic>bronze disease</topic></related><related type="broader"><topic>copper and copper alloy</topic></related><variant type="other"><topic>alloy, copper</topic></variant><variant type="other"><topic>copper alloys</topic></variant> <note xml:lang="en"><![CDATA[ Alloy in which copper is the principle element. ]]></note></mads>