@book{41904,
	author = {Engels, Federico and Sacristán, Manuel},
	title = {Anti-Dühring : },
	publisher = {Editorial Grijalbo , },
	year = {1968.},
	series = {Ciencias económicas y sociales},
	address = {México : },
	edition = {2a. ed.},
	note = {Incluye índice.}
}