<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31430592</termId><termName>ISTC</termName><termType>PT</termType><termNote><![CDATA[ Identifiers in a numbering system developed to enable the unique identification of textual works, including any content appearing in conventional printed books, audio-books, static e-books or enhanced digital books, as well as content which might appear in a newspaper or journal. Compliant with ISO 21047:2009. ]]></termNote><termCreatedDate>2026-03-30 20:56:10</termCreatedDate><relation><relationType>UF</relationType><termId>31430593</termId><termName>International Standard Text Code</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31430594</termId><termName>International Standard Text Codes</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31401013</termId><termName>identification numbers and codes</termName><termType>PT</termType></relation></term>  </Zthes>