| Publication Type: | Journal Article |
| Year of Publication: | 1955 |
| Authors: | H. Kern |
| Journal: | Papers of the Michigan Academy of Science, Arts and Letters |
| Volume: | 40 |
| Pagination: | 9-21 |
| Citation Key: | 2869 |
| Publication Type: | Journal Article |
| Year of Publication: | 1955 |
| Authors: | H. Kern |
| Journal: | Papers of the Michigan Academy of Science, Arts and Letters |
| Volume: | 40 |
| Pagination: | 9-21 |
| Citation Key: | 2869 |