<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
	mads.xsd"><authority><topic authority="http://www.serbi.ula.ve/tematres/vocab/">ENSEÑANZA DE LA QUIMICA</topic></authority><variant type="other"><topic>Química--Enseñanza</topic></variant> <note xml:lang="es">&lt;p&gt;&lt;a href=&quot;http://www.loc.gov/aba/publications/FreeLCC/Q-text.pdf&quot; target=&quot;_blank&quot;&gt;[QD40-QD45]&lt;/a&gt;&lt;/p&gt; </note></mads>