<?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">pietra ollare</topic></authority><related type="broader"><topic>schist</topic></related><variant type="other"><topic>ollare, pietra</topic></variant> <note xml:lang="en"><![CDATA[ Refers to several groups of greenschist found in the Italian Central Alps which contain carvable soapstone; much used in the Middle Ages as a material for the production of food preparation and storage vessels, and of stoves. ]]></note></mads>