...Los Angeles Center for Advanced Study in the Behavioral Sciences Center for International Studies, Economic Research Cornell University Georgia Institute...Indiana University Institute for Social Research, Duke University University of Colorado Columbia University Cornell Institute for Social and University...

...University of Illinois Indiana University Institute for Research in Social Science, UNC -Chapel Hill Institute for Social Research, University of Michigan University of Iowa The Johns Hopkins University Massachusetts Institute of Technology Maxwell School of Citizenship and Public Affairs, Syracuse University...

...University of Illinois Indiana University Institute for Research in Social Science, UMC -Chapel Bill Institute for Social Research, University of Michigan University of Iowa The Johns Hopkins University Massachusetts Institute of Technology University of Michigan University of Missouri University of Nebraska...

...University of Illinois Indiana University Institute for Research in Social Science , UNC-Chap«l Hill Institute for Social Research, University of Michigan University of Iowa The Johns Hopkins University Massachusetts Institute of Technology Maxwell School of Citixenship and Public Affairs, Syracuse University...

...University of Illinois Indiana University Institute for Research in- Social Science. UNC-Chapel Hill Institute for Social Research, University of Michigan University of Iowa The Johns Hopkins University Massachusetts Institute of Technology Maxwell School of Citizenship and Public Affairs, Syracuse University...

...University of Illinois Indiana University Institute for Research in Social Science, UNC-Chapel Hill Institute for Social Research, University of Michigan University of Iowa The Johns Hopkins University Massachusetts Institute of Technology Maxwell School of Citizenship and Public Affairs, Syracuse University...

...University of Illinois Indiana University Institute for Research in Social Science , UNC -Chapel Hill Institute for Social Research, University of Michigan University of Iowa The Johns Hopk ins University Massachusetts Institute of Technology University of Michigan University of Missouri...

...University of Illinois Indiana University Institute for Research in Social Science, UNC -Chapel Hill Institute for Social Research, University of Michigan University of Iowa The Johns Hopkins University Massachusetts Institute of Technology Maxwell School of Citizenship and Public Affairs, Syracuse University...

...University of Illinois Indiana University Institute for Research in Social Science, UNC-Chapel Hill Institute for Social Research, University of Michigan University of Iowa The Johns Hopkins University Massachusetts Institute of Technology Maxwell School of Citizenship and Public Affairs , Syracuse University...

...University of Illinois Indiana University Institute for Research in Social Science, UNC-Chapel Hill Institute for Social Research, University of Michigan...of Iowa The Johns Hopkins University University of Maryland Massachusetts Institute of Technology Maxwell School of Citizenship and Public Affairs, Syracuse...