Comparative study of intergovernmental organizations, 1970-1971. [machine-readable data file] / Lopez, George A. and Stern, Jean M. [principal investigators]. Ann Arbor, MI: Inter-university Consortium for Political and Social Research. [distributor].
Study Number: FB-502-001-1-1-International-ICPSR-1970
Intergovernmental organization data, 1815-1964. [machine-readable data file] / Singer, J. David and Wallace, Michael [principal investigators]. Ann Arbor, MI: Inter-university Consortium for Political and Social Research. [distributor].
Study Number: FB-501-001-1-1-International-ICPSR-1815
National memberships in international nongovernmental organizations, 1966. [machine-readable data file] / Baldwin, Burt R. [principal investigator]. Ann Arbor, MI: Inter-university Consortium for Political and Social Research. [distributor].
Study Number: FB-503-001-1-1-International-ICPSR-1966
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