<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>10605</termId><termName>elastic waves</termName><termType>PT</termType><termCreatedDate>0000-00-00 00:00:00</termCreatedDate><relation><relationType>BT</relationType><termId>12294</termId><termName>waves</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>8998</termId><termName>seismic waves</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>10591</termId><termName>sound waves</termName><termType>PT</termType></relation></term>  </Zthes>