| Publication Type: | Journal Article |
| Year of Publication: | 1959 |
| Authors: | J. - L. Perret |
| Journal: | Bulletin de la Société Neuchâteloise des Sciences Naturelles |
| Volume: | 82 |
| Pagination: | 247-253 |
| Publication Type: | Journal Article |
| Year of Publication: | 1959 |
| Authors: | J. - L. Perret |
| Journal: | Bulletin de la Société Neuchâteloise des Sciences Naturelles |
| Volume: | 82 |
| Pagination: | 247-253 |