@book{6964,
	author = {Marx, Karl,},
	title = {Cartas a Kugelmann /},
	publisher = {Península,},
	year = {1974},
	series = {Ediciones de bolsillo (1970) ;},
	address = {Barcelona :},
	note = {Tít. orig.: Lettres à Kugelmann, 1862-1874}
}