@book{10581,
	author = {Kraft, Victor and Gracia, Francisco},
	title = {El circulo de Viena},
	publisher = {: Taurus Ediciones},
	year = {, 1977},
	series = {Ensayistas},
	address = {Madrid, España},
	edition = {Segunda ediciòn},
	note = {Incluye índice}
}