<?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/">PETROLEO</topic></authority><related type="narrower"><topic>ACEITES Y GRASAS</topic></related><related type="narrower"><topic>CAMPOS PETROLEROS</topic></related><related type="narrower"><topic>LIQUIDOS INFLAMABLES</topic></related><related type="narrower"><topic>PERFORACION</topic></related><related type="narrower"><topic>PETROLEO SINTETICO</topic></related><related type="other"><topic>INDUSTRIAS PETROQUIMICAS</topic></related><related type="broader"><topic>ACEITES MINERALES</topic></related><related type="broader"><topic>COMBUSTIBLES FOSILES</topic></related><related type="broader"><topic>DESTILACION DESTRUCTIVA</topic></related><related type="broader"><topic>GAS</topic></related><related type="broader"><topic>POZOS</topic></related><variant type="other"><topic>Aceite de carbón</topic></variant></mads>