ABSTRACT
This chapter focuses on the comparison between Sraffa's critique of the Marshallian treatment of variable returns in the 1920s, the analysis of interdependence and given quantities and Production of Commodities by Means of Commodities. We update previous analysis on the same issues provided by Carlo Panico and Neri Salvadori in a paper published in1994 in the light of the unpublished material made available in the meanwhile after the opening of Sraffa's archive at the Wren Library of Trinity College, Cambridge (UK).
