@book{2349,
	author = {Proudhon, Pierre-Joseph and Abad de Santillán, Diego},
	title = {Sistema de las contradicciones económicas o Filosofía de la miseria (Volumen II)},
	publisher = {Júcar},
	year = {1975]},
	series = {Biblioteca Júcar},
	address = {[Madrid}
}