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Budge, Ian; Hearl, Derek J.; Klingemann, Hans-Dieter; Robertson, David R.; Volkens, Andrea (1995): Comparative Manifestos Project (Programmatic Profiles of Political Parties in 20 Countries, 1945-1988). GESIS Data Archive, Cologne. ZA2570 Data file Version 1.0.0, doi:10.4232/1.2570
(en)
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Budge, Ian; Hearl, Derek J.; Klingemann, Hans-Dieter; Robertson, David R.; Volkens, Andrea (1995): Comparative Manifestos Project (Programmatic Profiles of Political Parties in 20 Countries, 1945-1988). GESIS Datenarchiv, Köln. ZA2570 Datenfile Version 1.0.0, doi:10.4232/1.2570
(de)
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