A major concern of the Cornell Modern Indonesia Project has been with the problems of decentralization and regionalism in contemporary Indonesia. Research which it has sponsored resulted in two previous Interim Reports: Mr. Gerald S. Maryanov's first study, Decentralization in Indonesia: Legislative Aspects (April, 1957) and Professor John D. Legge's, Problems of Regional Autonomy in Contemporary Indonesia (August, 1957. The present report of Mr. Maryanov is based primarily upon research undertaken during his most recent stay in Indonesia, February - August, 1958, and consequently incorporates considerable important new material.Mr. Maryanov spent the period 1953-1955 in Indonesia as an instructor in the Ford Foundation's Indonesian-English Language Training Program. Duping 1955-56 he undertook research on Indonesia in the Netherlands; the following year he was at Cornell University as a Research Assistant in its Modern Indonesia Project, and during 1957-58 carried on research at Cornell and in Indonesia under a fellowship from the Ford Foundation.