@book{177422,
	author = {Enger, Eldon D., coaut.},
	title = {Ciencia ambiental : un estudio de interrelaciones  /},
	publisher = { McGraw-Hill,},
	year = {2006},
	address = {México  :},
	edition = {10a ed.},
	note = {Título original: Environmental science: a study of interrelationships}
}