<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/schema/zthes-1.0.dtd">  <Zthes><term><termId>3957</termId><termName>CATALIZADORES ZIEGLER-NATTA</termName><termType>PT</termType><termLanguage>es-ES</termLanguage><termVocabulary>TESAURO DE MATERIAS DE SERBIULA</termVocabulary>	<termStatus>active</termStatus>	<termApproval>approved</termApproval>	<termSortkey>CATALIZADORES ZIEGLER-NATTA</termSortkey><termNote label="Cota LC"><![CDATA[ <p><a href="http://www.loc.gov/aba/publications/FreeLCC/Q-text.pdf" target="_blank">[QD505 (Physical chemistry)]</a></p>

<p><a href="http://www.loc.gov/aba/publications/FreeLCC/T-text.pdf" target="_blank">[TP159.C3 (Chemical engineering)]</a></p> ]]></termNote><termCreatedDate>CATALIZADORES ZIEGLER-NATTA</termCreatedDate><termModifiedDate>2015-02-11 06:22:23</termModifiedDate><relation><relationType>BT</relationType><termId>3947</termId><termName>CATALIZADORES</termName><termType>PT</termType></relation><relation><relationType>BT</relationType><termId>6566</termId><termName>CATALIZADORES DE METALES DE TRANSICION</termName><termType>PT</termType></relation></term>  </Zthes>