urn:ddi:de.dezim:8890d035-1716-4641-9e8a-a7b5e5ef1443:2 de.dezim 8890d035-1716-4641-9e8a-a7b5e5ef1443 2 extension:ShouldCalculateFrequenciesForValidValues False extension:ShouldCalculateFrequenciesForInvalidValues False fdz@dezim-institut.de soc0018_o2 soc0018_o2 soc0018_o2 Deutsche Staatsangehörigkeit: Jahr des Erwerbs - offen - Fremdsprache German citizenship: year of acquisition - open - foreign language German citizenship: year of acquisition - open - foreign language int.example be4506b6-162e-4a38-b197-bef00fbdbeeb 1 QuestionItem