Social theory and naturalism : an introduction / Elias L. Khalil -- Interfacing complexity at a boundary between the natural and social sciences / Karl H. Pribram -- The autonomy of social reality : on the contribution of systems theory to the theory of society / Jean-Pierre Dupuy -- Ultra-Darwinian explanation and the biology of social systems / Niles Eldredge -- The complexity of social and mental structures in nonhuman mammals / Hubert Hendrichs -- On the social nature of autopoietic systems / Milan Zeleny -- Organization, function, and creativity in biological and social systems / Vilmos Csanyi -- Human society as an emerging global superorganism : a biological perspective / Gregory B. Stock and John H. Campbell -- Neurological and social bases of dominance in human society / Henri Laborit -- The propensities of evolving systems / Robert E. Ulanowicz -- Synergetics as a bridge between the natural and social sciences / Hermann Haken -- The problem of observables in models of biological organizations / Howard H. Pattee.