This volume contains 31 papers dealing with the issue of regional disparities and regional planning. The volume is divided into three parts. Part 1 of the volume contains 11 papers dealing with inter-state disparities in India. The first paper gives an over view of the problem of regional disparities and economic development in the developed and the developing countries. The second paper in this section delves into the historical roots of regional imbalances in India. The third paper in this section seeks to look at the problem of regional dualism and development process in post-independence India in the context of the task of national integration and nation building. The next four papers in the section discuss the trends in regional disparities in terms of growth rate of SDP covering different time spans. Chapter 8 looks at the comparative levels of development across major states, while the ninth paper presents composite indices of the quality of life and levels of living and its sub-components across the major states of India. The last two chapters in this section deal with the impact of Finance Commission transfers on regional disparities. Part 2 of the volume contains 9 papers dealing with the inter-regional disparities within the state of UP. The first paper in this part analyses the trends in inter- regional and inter-district income differentials in U.P. over the period 1951-1971. The second paper probes the determinants of inter-district income disparities. The next paper examines some aspects of the levels, potential, constraints and prospects of development of the hill districts of the State, now a separate state of Uttarakhand. The next four chapters deal with the factors in relative backwardness of eastern Uttar Pradesh. The last paper in this part deals with the challenge of development and poverty in Bundelkhand region of U.P.