<?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">soil stacks</topic></authority><related type="broader"><topic>stacks</topic></related><variant type="other"><topic>soil pipes</topic></variant><variant type="other"><topic>soil stack</topic></variant><variant type="other"><topic>soul pipe</topic></variant><variant type="other"><topic>stacks, soil</topic></variant> <note xml:lang="en"><![CDATA[ Vertical pipes or stacks in a plumbing system that convey the discharge from toilet fixtures; for stacks that convey the waste from fixtures other than toilets, use "waste stacks". ]]></note></mads>