#1333 Resources, Environment and Man. , 05/30/1972.

William W. Behrens III, Systems Analyst, Massachusetts Institute of Technology; and co-author of "The Limits to Growth" Dr. Vincent, E. McCleavey, Director U.S. Geological Survey, U.S. Interior Department Dr. Ronald G. Ridher, Staff Economist, Resources for the Future; and Special Consultant, President's Commission on Population Growth and the American Future Rev. William F. Ryan, S.J., Ph.D., Development Economist and Program Director, Center of Concern