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	<authority>
	    <topic authority="Vocabulario General de la Biblioteca Nacional de Maestros">Contaminación ambiental</topic>
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        <related type="narrower">
        <topic>Contaminación acústica</topic>
    </related>
        <related type="narrower">
        <topic>Contaminación atmosférica</topic>
    </related>
        <related type="narrower">
        <topic>Contaminación del agua</topic>
    </related>
        <related type="narrower">
        <topic>Contaminación del suelo</topic>
    </related>
        <related type="narrower">
        <topic>Contaminación industrial</topic>
    </related>
        <related type="narrower">
        <topic>Residuos</topic>
    </related>
    
            <related type="broader">
        <topic>Deterioro ambiental</topic>
    </related>
    
    
    
    
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