@book{52959,
	author = {Heller, Ágnes. and Sacristan, Manuel,},
	title = {Hipótesis para una teoría marxista de los valores /},
	publisher = {Ediciones Grijalbo,},
	year = {1973.},
	address = {Barcelona :},
	note = {Translated from Hypothese zu einer marxistischen Werttheorie.}
}