@book{90636,
	author = {Camacho Anguiano, Iván  and Ramírez, Andrés },
	title = {Ecología y medio ambiente},
	publisher = { : ST editorial },
	year = {, 2011},
	series = {Bachillerato },
	address = {México},
	note = {En portada: Desarrolla Competencias }
}