<?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">pipes</topic></authority><related type="other"><topic>piping</topic></related><related type="other"><topic>pipelaying</topic></related><related type="other"><topic>pipe fittings</topic></related><related type="broader"><topic>object genres by form</topic></related><variant type="other"><topic>pipe</topic></variant><variant type="other"><topic>tube</topic></variant> <note xml:lang="en"><![CDATA[ Tubular conduits, generally leakproof, for the transport of liquids or gases. For assemblies of pipes, tubes, and fittings in plumbing systems, use "piping (plumbing system components)." ]]></note></mads>