?:citationString
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Welzel, Christian (2015): World Values Studies key aggregates, waves 1-6 (Welzel replication file). GESIS Data Archive, Cologne. ZA7470 Data file Version 1.0.0, doi:10.4232/1.12407
(en)
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Welzel, Christian (2015): World Values Studies key aggregates, waves 1-6 (Welzel replication file). GESIS Datenarchiv, Köln. ZA7470 Datenfile Version 1.0.0, doi:10.4232/1.12407
(de)
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