@book{1638,
	author = {Smith, Thomas S. and Smith, Robert Leo.},
	title = {Ecología /},
	publisher = {Pearson,},
	year = {2007},
	address = {Madrid, España :},
	edition = {6ª edición.},
	url = {https://itmsp.museknowledge.com/UOH?qurl=https://libros-uoh.uoh.cl//ebook_2/ecologia/}
}