<?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">exhaust ventilation</topic></authority><related type="broader"><topic>ventilation</topic></related><variant type="other"><topic>exhaust systems</topic></variant><variant type="other"><topic>exhaust ventilation systems</topic></variant><variant type="other"><topic>systems, exhaust</topic></variant><variant type="other"><topic>systems, exhaust ventilation</topic></variant><variant type="other"><topic>ventilation systems, exhaust</topic></variant><variant type="other"><topic>ventilation, exhaust</topic></variant> <note xml:lang="en"><![CDATA[ Ventilation that allows fresh air to enter a space through available or controlled openings and employs mechanical means such as fans to remove foul air from the same space. ]]></note></mads>