- Publication venue
- 'Finnish Yearbook of Population Research'
- Publication date
- 01/01/1966
- Field of study
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- Publication venue
- 'Aikuiskasvatus'
- Publication date
- 15/09/1983
- Field of study
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- Publication venue
- Kotikielen Seura
- Publication date
- 01/01/1971
- Field of study
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