<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31458210</termId><termName>double spiral stairs</termName><termType>PT</termType><termNote><![CDATA[ Stairs in which two spiral stairs are intertwined, one of the most famous examples being the central staircase at the Château of Chambord. ]]></termNote><termCreatedDate>2026-03-30 21:03:20</termCreatedDate><relation><relationType>UF</relationType><termId>31458211</termId><termName>double helix stairs</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31458212</termId><termName>double spiral stair</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31458213</termId><termName>double spiral staircases</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31458214</termId><termName>spiral staircases, double</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31458215</termId><termName>spiral stairs, double</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31458216</termId><termName>staircases, double spiral</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31458217</termId><termName>stairs, double helix</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31458218</termId><termName>stairs, double spiral</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31439594</termId><termName>spiral stairs</termName><termType>PT</termType></relation></term>  </Zthes>