@book{5071,
	author = {Bossing, Nelson L. and Franco, Ada Emma},
	title = {Principios de la educación secundaria},
	publisher = {Eudeba},
	year = {1960},
	series = {Temas de Eudeba. Educación},
	address = {Buenos Aires},
	edition = {2ª ed.},
	note = {Indice alfabético p. 509-525}
}