Polity II, political structures and regime change, 1800-1986 ICPSR 9263
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Analysis of regimes' structural characteristics, institutional changes, and the directionality of changes on underlying dimensions of democracy, autocracy, and power...
对政体的结构特征、制度变迁，以及其在民主、专制与权力底层维度上的变革方向所开展的分析
