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132. Paths of Generation: Longitudinal Comparative Study of Secondary School Graduates in Different Regions of the Former Soviet Union--Stage 1, 1983 Bookmark Format Series - completed
137. Polity V: Political Regime Characteristics and Transitions, 1800-2018 Bookmark Format Series - ongoing
140. Pre-Vaccine Era COVID-19 Infection Fatality Ratio Estimates by Age, Time, and Location 2020-2021 Bookmark Format Single study