The study of elites, or “who's who, when, and how,” as Professor Rustow has described this field, has long been a topic of concern to scholars in a wide variety of disciplines. Social and political philosophers dating back to Aristotle and including such diverse figures as Marx, Pareto, and Mosca have written about the relationships between elites and the social order, and a host of social scientists and historians have carried out detailed analyses of the social background of highlevel decision-makers in various societies