66 SOCIAL SCIENTIST Annual Survey of Industries, 1968, Central Statistical Organization, Government of India, 1973. 2 8 For the preparation of the tables a questionnaire was sent to the government of each state and union territory. Only the Government of Tripura has kindly replied. The Mizo district of Assam was made a union territory on 21 January 1972. NEFA was transformed into Arunachal Pradesh with 5 districts; Tripura with 3 districts, Manipur with 5 districts and Meghalaya (which was part of Assam with 2 districts) with 4 districts became full-fledged states as a result of the North Eastern Areas (Reorganization) Act, 1971. See India 1974, Ministry of Information and Broadcasting, Government of India, pp 330-371. 24 The indices are: (a) density of population (persons per square mile), (b) area under double crop (p. c. ofn.s. a.), (c) gross area irrigated (p. c. of gross area sown), (d) workers in household industries (p. c. of total working population), (e) workers in registered factories (p. c. of all workers), (f) number of registered factories, (g) workers in retail trade (per 1000 of total population), (h) establishments run on electricity (p. c. of all industrial establishments), (i) urban population (per 1000 of total population), (j) number of towns, (k) crude literacy rate (per 1000 of total population), (1) schools (per 1000 of all census houses), (m) medical institutions (per 1000 of all census houses), (n) miles of surfaced roads (per 1000 square miles of area). 2 5 Census of India, 1961, op. cit. 26 Until 1972 the Khasi-Jaintia Hills excluding the portion formerly known as British Shillong constituted the autonomous United Khasi-Jaintia Hills district while the former British Shillong was called the Khasi and Jaintia district. The census did not acknowledge the difference and put the two districts under one head: United Khasi and Jaintia Hills district. The inclusion of Shillong, the state-capital, in the census district is largely responsible for the inflated figures of the Khasi-Jaintia Hills. 27 R L Singh (Ed.) India, a Regional Geography, Benares Hindu University, 1971, p 329. 28 / 2 9 In this article all references to NEFA and Northeast Frontier concern the territory now comprising Arunachal Pradesh. 80 K A Raja, "Prospect of Economic Growtli of Arunachal Pradesh and Fifth Five Year Plan", North-East Affairs, Vol 2, No 4, 1974, p 24. 81 Ibid., p 25. 82 Ibid. 83 See table IV. 84 For details see A Guha, "Immigrants and Autochthones in a Plural Society: Their Inter-relations in the Brahmaputra Valley in Historical Perspective,'-' unpublished paper, submitted at a seminar held during 10-12 March 1975, at the Department of Sociology, Dibrugarh University.