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European Commission, Brussels (2014): Flash Eurobarometer 392 (Preferences of Europeans towards Tourism, 2014). GESIS Data Archive, Cologne. ZA5905 Data file Version 1.0.0, doi:10.4232/1.12005
(en)
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European Commission, Brussels (2014): Flash Eurobarometer 392 (Preferences of Europeans towards Tourism, 2014). GESIS Datenarchiv, Köln. ZA5905 Datenfile Version 1.0.0, doi:10.4232/1.12005
(de)
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