@book{5274,
	author = {Frota-Pessoa, Oswaldo.},
	title = {Principios básicos para la enseñanza de la biología},
	publisher = {Unión Panamericana,},
	year = {1981},
	series = {Serie de biología monografía},
	address = {Washington :},
	edition = {3 ed.},
	note = {56-230}
}