<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31379088</termId><termName>sheet music covers</termName><termType>PT</termType><termNote><![CDATA[ Covers, usually made of paper, used to cover sheet music; the golden age of sheet music cover designs began ca. 1820, following the invention of lithography. ]]></termNote><termCreatedDate>2026-03-30 20:42:16</termCreatedDate><relation><relationType>UF</relationType><termId>31379089</termId><termName>covers, sheet music</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31379090</termId><termName>sheet music cover</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31349044</termId><termName>coverings for gathered matter</termName><termType>PT</termType></relation></term>  </Zthes>