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European Commission, Brussels (2014): Flash Eurobarometer 369 (Investing in Intangibles: Economic Assets and Innovation Drivers for Growth). GESIS Data Archive, Cologne. ZA5881 Data file Version 1.0.0, doi:10.4232/1.11908
(en)
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European Commission, Brussels (2014): Flash Eurobarometer 369 (Investing in Intangibles: Economic Assets and Innovation Drivers for Growth). GESIS Datenarchiv, Köln. ZA5881 Datenfile Version 1.0.0, doi:10.4232/1.11908
(de)
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