@book{5859,
	author = {Vainstok, Arturo and Olivera, Julio H.G. prol},
	title = {Estudios de economía cooperativa.},
	publisher = {Intercoop,},
	year = {1977},
	series = {Cuadernos de Cultura Cooperativa, 55},
	address = {Argentina:},
	edition = {1aed}
}