<?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">x-ray protective glass</topic></authority><related type="broader"><topic>glass by property</topic></related><variant type="other"><topic>glass, x-ray protective</topic></variant><variant type="other"><topic>protective glass, x-ray</topic></variant><variant type="other"><topic>x-ray absorbing glass</topic></variant><variant type="other"><topic>x-ray rejecting glass</topic></variant><variant type="other"><topic>x-ray resistant glass</topic></variant> <note xml:lang="en"><![CDATA[ Glass that contains a high percentage of lead oxide and sometimes barium oxide, which offers sufficient protection from x-rays. ]]></note></mads>