Contributors: Harvey Brooks, Jonathan R. Cole, Stephen R. Graubard, Adrienne Jamieson, Donald Kennedy, Nannerl O. Keohane, Seymour Martin Lipset, Walter E. Massey, Steven Muller, Rodney W. Nichols, Nelson W. Polsby, Kenneth Prewitt, Frank H.T. Rhodes, William C. Richardson, Robert M. Rosenzweig, John R. Searle, Eugene B. Skolnikoff, Neil J. Smelser, Stephen M. Stigler, Francis X. Sutton