Energy and Natural Resources Committee, US Senate, Washington, D.C., USA
Karl Hausker (Staff Economist)
Senior Associate with The Conservation Foundation, Washington, D.C., USA
Robert G. Healy
Visiting Professor in the School of Forestry and Environmental Studies and in the Institute of Policy Sciences, Duke University, USA
Robert G. Healy
Department of Political Science, University of Illinois at Chicago, Chicago, USA
Paul J. Quirk (Associate Professor)
Institute of Government and Public Affairs, University of Illinois, USA
Paul J. Quirk (Associate Professor)
Teacher of economics at the University of Dallas, Dallas, USA
Robert Formaini