<?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">backs</topic></authority><related type="other"><topic>backs</topic></related><related type="other"><topic>spines</topic></related><related type="broader"><topic>gathered matter components</topic></related><variant type="other"><topic>back</topic></variant> <note xml:lang="en"><![CDATA[ The uncovered binding edges of text blocks, formed where and when the back edges of the gatherings are attached together. For the portions of covers that enclose the back, use "spines." ]]></note></mads>