In 1965, a group of economists at Harvard University established the Project for Quantitative Research in Economic Development in the Center for International Affairs. Brought together by a common background of fieldwork in developing countries and a desire to apply modern techniques of quantitative analysis to the policy problems of these countries, they produced this volume, which represents that part of their research devoted to formulating operational ways of thinking about development problems. The seventeen essays are organized into four sections: General Planning Models, International...