<?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">shell</topic></authority><related type="narrower"><topic>seashell</topic></related><related type="narrower"><topic>dentalium</topic></related><related type="other"><topic>tortoise shell</topic></related><related type="other"><topic>chipolin</topic></related><related type="other"><topic>muschelkalk</topic></related><related type="other"><topic>opercula</topic></related><related type="other"><topic>shellwork</topic></related><related type="other"><topic>shellwork artists</topic></related><related type="broader"><topic>animal shell and shell material</topic></related><variant type="other"><topic>shells</topic></variant> <note xml:lang="en"><![CDATA[ Hard outer covering of invertebrate creatures, composed of calcareous or chitinous material. ]]></note></mads>