25. Country Memberships in Selected Intergovernmental Organizations and Accession to Selected Regional and Global Treaty Regimes: Global, Country-Year Format, 1955-2010 Bookmark Format Single study
29. COVID-19 Government Response Tracker (University of Oxford - Blavatnik School of Government) Bookmark Format Series - ongoing
30. COVID-19 Pandemic Preparedness - Infection Rate and Infection Fatality Ratio Estimates 2020-2021 Bookmark Format Single study