- Publication venue
- BirdLife Finland
- Publication date
- 01/07/1942
- Field of study
- Publication venue
- BirdLife Finland
- Publication date
- 31/12/1946
- Field of study
- Publication venue
- BirdLife Finland
- Publication date
- 01/07/1947
- Field of study
- Publication venue
- BirdLife Finland
- Publication date
- 31/03/1947
- Field of study
- Publication venue
- BirdLife Finland
- Publication date
- 31/03/1942
- Field of study
- Publication venue
- 'Springer Science and Business Media LLC'
- Publication date
- Field of study