| Publication Type: | Journal Article |
| Year of Publication: | 1959 |
| Authors: | M. M. Barbosa |
| Journal: | Anais da Academia Brasileira de Ciências |
| Volume: | 31 |
| Issue: | 1 |
| Pagination: | 109-111 |
| Date Published: | 1961 |
| Publication Type: | Journal Article |
| Year of Publication: | 1959 |
| Authors: | M. M. Barbosa |
| Journal: | Anais da Academia Brasileira de Ciências |
| Volume: | 31 |
| Issue: | 1 |
| Pagination: | 109-111 |
| Date Published: | 1961 |