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Cornell University Library |
Duke University Libraries |
Emory University Library |
Inter-University Consortium for Political and Social Research (ICPSR) |
Johns Hopkins University Libraries |
Massachusetts Institute of Technology (MIT) Libraries |
North Carolina State University Libraries |
Texas Digital Library |
Tufts University |
University of British Columbia |
University Library,
University of Illinois at
Urbana-Champaign and
University of Illinois at
Chicago Library |
University of Michigan Library |
University Library System, University of Pittsburgh |
University of Texas Libraries |
University of Toronto |
Virginia Tech Libraries |
