<?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">polylactic acid</topic></authority><related type="broader"><topic>thermoplastic polyester</topic></related><variant type="other"><topic>PLA</topic></variant><variant type="other"><topic>acid, polylactic</topic></variant><variant type="other"><topic>polylactic acid</topic></variant> <note xml:lang="en"><![CDATA[ Thermoplastic polyester manufactured from corn starch or other renewable resources. First developed for use as a synthetic fiber during World War 2 when organic materials were in short supply. In conservation used as a protective covering for stone materials exposed outdoors.  ]]></note></mads>