<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31478218</termId><termName>poros</termName><termType>PT</termType><termNote><![CDATA[ Variously defined limestones, occurring in Egypt and the Peloponnesus and extensively used as building materials by the ancient Greeks; apparently included several materials, such as tufa, travertine, fossiliferous limestone, and onyx marble. ]]></termNote><termCreatedDate>2026-03-30 21:08:46</termCreatedDate><relation><relationType>BT</relationType><termId>31471258</termId><termName>limestone by composition: aggregate type</termName><termType>PT</termType></relation></term>  </Zthes>