@book{26198,
	author = {Duverger, Maurice  and Tierno Galvan, Enrique },
	title = {Metodos de las Ciencias Sociales / },
	publisher = {Ariel, },
	year = {1996},
	address = {Barcelona : },
	edition = {1 ed.},
	note = {Contiene bibliografias anotadas e indices}
}