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In the third world countries the regional development plans tend to be made up of sectoral components for example industry, education and agriculture. Though the government machinery does pay some attention to inter-sectoral coordination yet it is rare that anything more than superficial attention is paid to urban-rural systems, and the geographical location of the projects. Same is the case with the Baluchistan Province of Pakistan. Due to political developments in Afghanistan and the Middle East. Pakistan in general and Baluchistan in particular have assumed a special significance in the World politics. "Urban Functions in Rural Development" (UFRD) was developed under U.S. Agency for International Development (AID) and applied in the study of Potosi Region in Bolivia. In this thesis we have tried to describe, in brief the concept and methodology of the spatial aspects of the regional development, and apply the UFRD concept in analyzing the Baluchistan Region. The accessibility step of this planning process is very important. It tells us the disparity among the areas in the Region and also the overall regional accessibility• So the accessibility aspect of Baluchistan has been dealt in great details and a number of trials have been done using "Applesoft Basic Package". / M.S.

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A computer program was developed which provides the necessary information required by landowners to evaluate thinning alternatives in yellow-poplar stands. The program is written Applesoft BASIC for the APPLE II+ microcomputer with a design which emphasizes flexibility and ease of use. The program consists of two primary segments: growth and yield, and economic evaluation. The growth and yield segment is composed of a stand level growth and yield model which consists primarily of a collection of equations specified by Knoebel (1982). The economic evaluation segment calculates two measures of economic performance for before or after taxes. The performance criteria are the present net worth and internal rate of return. Using the computer program developed in the study, optimum thinning regimes were estimated for existing stands of yellow-poplar under a variety of economic and biological conditions. Given a set of benchmark costs and revenues, optimum thinning regimes were estimated for three sites (80, 100, and 120, base age 50). A sensitivity analysis was conducted in which interest rates, thinning costs, and clearcut stumpage values were varied. The optimum regimes expressed varying degrees of sensitivity to changes in the economic parameters. / M.S.

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