@book{48242,
	author = {Marx, Karl and S.W., Ryazanskaya},
	title = {Theories of surplus-value : },
	publisher = {Progress ,},
	year = {1971.},
	address = {Moscow : },
	note = {Translated from the German by Jack Cohen and S. W. Ryazanskaya; edited by S. W. Ryazanskaya and Richard Dixon.}
}