@book{36199,
	author = {Marx, Karl, and Hobsbawm, E. J.},
	title = {Formaciones económicas precapitalistas /},
	publisher = {Eds. Pasado y Presente,},
	year = {1979.},
	address = {Mexico :},
	edition = {7a ed.},
	note = {Translated from Grundisse der Kritik der politischen Okonomie.}
}