<?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">scientific concepts</topic></authority><related type="narrower"><topic>biological concepts</topic></related><related type="narrower"><topic>mathematical concepts</topic></related><related type="narrower"><topic>physical sciences concepts</topic></related><related type="narrower"><topic>engineering concepts</topic></related><related type="narrower"><topic>materials sciences concepts</topic></related><related type="narrower"><topic>computer science concepts</topic></related><related type="narrower"><topic>contamination</topic></related><related type="narrower"><topic>experimental artifacts</topic></related><related type="narrower"><topic>conservation concepts</topic></related><related type="other"><topic>science</topic></related><related type="broader"><topic>Associated Concepts</topic></related><variant type="other"><topic>concepts, scientific</topic></variant><variant type="other"><topic>scientific concept</topic></variant> <note xml:lang="en"><![CDATA[ Concepts that are found in the sciences.  ]]></note></mads>