<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31373991</termId><termName>ballast</termName><termType>PT</termType><termNote><![CDATA[ Heavy material, such as water, sand, or iron, used to increase weight, as in a machine. ]]></termNote><termCreatedDate>2026-03-30 20:40:51</termCreatedDate><relation><relationType>BT</relationType><termId>31343732</termId><termName>aggregate by size</termName><termType>PT</termType></relation></term>  </Zthes>