Alternative strategies in theoretical research / David Easton -- Politocal research: The decision-making framework / Herbert A. Simon -- An individualistic theory of political process / James M. Buchanan -- The power of power / James G. March -- The political aspect of social structure and process / Talcott Parsons -- A structural approach to comparative politics / M. G. Smith -- Some system approaches to political theory / Anatol Rapoport -- Categories for the systems analysis of politics / David Easton