| Publication Type: | Journal Article |
| Year of Publication: | 1945 |
| Authors: | Heegaard, PE |
| Journal: | Arkiv för Zoologi |
| Volume: | (A)35 |
| Issue: | 18 |
| Start Page: | 1 |
| Pagination: | 1-27 |
| Publication Type: | Journal Article |
| Year of Publication: | 1945 |
| Authors: | Heegaard, PE |
| Journal: | Arkiv för Zoologi |
| Volume: | (A)35 |
| Issue: | 18 |
| Start Page: | 1 |
| Pagination: | 1-27 |