@book{5621,
	author = {Ortíz de la Rocha, Mario.},
	title = {El cooperativismo camino de la revolución en Colombia / },
	publisher = {Talls. Gráf. de la Caja Popular Cooperativa, },
	year = {1973.},
	address = {Tunja : },
	note = {Incluye indice.}
}