<?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">engineering concepts</topic></authority><related type="narrower"><topic>structural analysis concepts</topic></related><related type="other"><topic>engineering</topic></related><related type="broader"><topic>scientific concepts</topic></related><variant type="other"><topic>concepts, engineering</topic></variant><variant type="other"><topic>engineering concept</topic></variant> <note xml:lang="en"><![CDATA[ Collocates descriptors for concepts related to the development and modification of engines, machines, structures, or other complicated systems, typically for public or commercial use. ]]></note></mads>