<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31328402</termId><termName>nineteenth century</termName><termType>PT</termType><termNote><![CDATA[ Century in the proleptic Gregorian calendar including the years 1800 to 1899 (or 1801 to 1900). ]]></termNote><termCreatedDate>2026-03-30 20:28:32</termCreatedDate><relation><relationType>UF</relationType><termId>31328403</termId><termName>19th century</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31328404</termId><termName>19th-century</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31328405</termId><termName>century, nineteenth</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31309694</termId><termName>dates by century or millennium</termName><termType>PT</termType></relation></term>  </Zthes>