See also
*References
*D'Aquili, Eugene G., Charles D. Laughlin and John McManus (1979) ''The Spectrum of Ritual''. New York: Columbia University Press. *Laughlin, C.D. and I.A. Brady (1978) ''Extinction and Survival in Human Populations''. New York: Columbia University Press. *Laughlin, Charles D., John McManus and Eugene G. d'Aquili (1990) ''Brain, Symbol and Experience: Toward a Neurophenomenology of Consciousness''. New York: Columbia University Press. *Rappaport, R.A. (1968) ''Pigs for the Ancestors''. New Haven: Yale University Press. *Rappaport, R.A. (1979) ''Ecology, Meaning and Religion''. Richmond: North Atlantic Books. *Rappaport, R.A. (1984) ''Pigs for the Ancestors''. 2nd edition. New Haven: Yale University Press. *Rappaport, R.A. (1999) '' Ritual and Religion in the Making of Humanity''. Cambridge: Cambridge University Press. *Rubinstein, R.A., C.D. Laughlin and J. McManus (1984) ''Science As Cognitive Process''. Philadelphia: University of Pennsylvania Press. Anthropology Environmental social science