<?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">calcium</topic></authority><related type="other"><topic>calcium propionate</topic></related><related type="broader"><topic>calcium and calcium compounds</topic></related><related type="broader"><topic>nonferrous metal</topic></related><related type="broader"><topic>elements</topic></related><variant type="other"><topic>Ca</topic></variant> <note xml:lang="en"><![CDATA[ A silvery white metal, with symbol Ca and atomic number 20, the fifth most abundant element in the earth's crust, occurring in many compounds. Its uses include as a nutritional supplement to assist the growth of bone and teeth, as a dehydrating agent for organic solvents, and to remove gases from molten metals prior to casting. ]]></note></mads>