<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31343256</termId><termName>magnesium bicarbonate</termName><termType>PT</termType><termNote><![CDATA[ A water-soluble compound created by bubbling carbon dioxide through a suspension of magnesium carbonate in water. In conservation, magnesium bicarbonate solutions are used for deacidifcation of paper. ]]></termNote><termCreatedDate>2026-03-30 20:32:34</termCreatedDate><relation><relationType>UF</relationType><termId>31343257</termId><termName>bicarbonate, magnesium</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31319736</termId><termName>compounds</termName><termType>PT</termType></relation></term>  </Zthes>