@book{415,
	author = {Purves, William K.},
	title = {Vida. },
	publisher = {Editorial Médica Panamericana;},
	year = {2004.},
	address = {Buenos Aires: },
	edition = {6a ed.},
	note = {Purves, W. K. et al. (2004). Vida. La ciencia de la biología. (6a ed.). Buenos Aires : Editorial Médica Panamericana. }
}