@book{37999,
	author = {Galindo León, Pedro Elías. },
	title = {Petroleo y paz : },
	publisher = {Universidad Nacional de Colombia,},
	year = {2002.},
	address = {Bogotá :},
	url = {https://www.google.com.co/books/edition/Petr%C3%B3leo_y_paz/0Ka9AAAACAAJ?hl=es}
}