<?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">horn centers</topic></authority><related type="broader"><topic>drafting, drawing and writing equipment by specific type</topic></related><variant type="other"><topic>horn-centres</topic></variant><variant type="other"><topic>centers, horn</topic></variant><variant type="other"><topic>horn center</topic></variant><variant type="other"><topic>centres, horn</topic></variant><variant type="other"><topic>horn centre</topic></variant> <note xml:lang="en"><![CDATA[ Small disks, originally of horn, used to protect a drawing from being marked by the point of a compass. ]]></note></mads>