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	mads.xsd"><authority><topic authority="http://www.serbi.ula.ve/tematres/vocab/">PETROLEO COMO CONTAMINANTE DEL AGUA</topic></authority><related type="narrower"><topic>PETROLEO COMO CONTAMINANTE DEL MAR</topic></related><related type="broader"><topic>CONTAMINACION DEL AGUA</topic></related><related type="broader"><topic>DERRAMES DE PETROLEO</topic></related><related type="broader"><topic>RESIDUOS DEL PETROLEO</topic></related><related type="broader"><topic>PETROLEO COMO CONTAMINANTE DE RIOS, PUERTOS, ETC.</topic></related><variant type="other"><topic>Contaminación del agua por petróleo</topic></variant><variant type="other"><topic>Petróleo como contaminador del agua</topic></variant></mads>