MARXIAN POLITICAL ECONOMY 57 and Distribution since Adam Smith, Cambridge University Press, 1973. For an early critique of bourgeois theories of value, see N I Bukharin, Economic Theory of the Leisure Class, Monthly Review Press, 1973. 9 See Joan Robinson, Economic Heresies, Macmillan, 1971, introduction and chapters 1 and 3; also Joan Robinson, ^Normal Prices^ in her Essays in the Theory of Economic Growth, Basil Balckwell, 1962. 10 For a good exposition, seej Quirk andR Saposnik, Introduction to General Equilibrium and Welfare Economics, McGraw-Hill, 1968. n Capital, vol III, pp 186-187. 12 J Quirk and R Saposnik, op cit. 1-? It will be recalled that Marx made an important breakthrough with the conception of labour-power' as the commodity sold by the worker, thus developing the theory of surplus value.' 14 Apart from the references cited in footnotes 8 and 9 above, we may also mention here E K Hunt andjesse Schwarz (eds.), Critique of Economic Theory, Penguin, 1973 and an earlier work of M H Dobb, Political Economy and Capitalism, Routledge and KeganPaul, 1940. 15 See especially Joan Robinson^s works cited earlier. 6 Capital, vol III, pp 180-181. 17 Ibid., pp 181-182. 18 Ibid., pp 190-191.