<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31459510</termId><termName>caoutchouc bindings</termName><termType>PT</termType><termNote><![CDATA[ Adhesive bindings produced in the mid-19th century using a rubber solution to glue the leaves together. They ceased to be made years later when it was discovered that  rubber turns brittle over time. ]]></termNote><termCreatedDate>2026-03-30 21:03:41</termCreatedDate><relation><relationType>UF</relationType><termId>31459511</termId><termName>bindings, caoutchouc</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31459512</termId><termName>caoutchouc binding</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31459513</termId><termName>gutta percha bindings</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31459514</termId><termName>gutta-percha bindings</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31441214</termId><termName>adhesive bindings</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31371710</termId><termName>caoutchouc binding</termName><termType>PT</termType></relation></term>  </Zthes>