SOCIAL SCIENTIST 30 13. U. Patnaik 1975, 'Contribution to Output and Marketable Surplus of Agricultural Products by Cultivating Groups in India*, EPW, Vol. X No. 52 Dec. 2-7. 14. From 'Patnaik 1975. contribution to Output and Marketable Surplus', op. cit. 15. Introduction t0 U. Patnaik & M. Dingwaney (Eds) Chains of Servitude (Orient Longman 1985). 16. U. Patnaik, Peasant Class Differentiation: A Study in Method with Reference to Haryana (OUP), forthcoming 1985). 17. G.S. Bhalla, op. cit. 18. A. Vaidynathan, 1985 "Food Consumption and Size of People-Some Indian Evidence* (EPW Review of Political Economy July 27) has summarised available data indicating a positive association between calorie intake and physical indicators like weight and a negative association of nutrition with morbidity. 9. See studies in Bardhan and Srinivasan (Ed) Poverty and Income Distribution in India. 1974; and M.S. Ahluwalia 1977. op. cit. 20. N-S. lyengar and M.H. SuryanarayanL 1984 'On Poverty Indicators' EPW June 2-9. The finding of real expenditure distribution which is unchanged contrasts with A. Vaidyanathan 1974, 'Some Aspects of Inequalities in Living Standards in Rural India* in Bardhan and Srinivasan (Eds), ibid.