This book consists of 15 papers by different authors, some of whom contributing more than one chapter. The papers were presented in a series of semi¬nars given on the University of Florida campus during the period between January and November 1966. As such, the authors were not brought together as is increasingly the case nowadays when one sees a collection of papers related to the problems of economic development and agriculture. Each author worked independently of the others. As the editor admits, there are duplications of ideas as well as differences in ideas among the authors. Editorial revisions of the papers were kept to a minimum and the reconciliation of these duplications and differences is left to the reader.