| Publication Type: | Journal Article |
| Year of Publication: | 1990 |
| Authors: | N. De Buck |
| Journal: | Studiendocumenten Royal Belgian Institute of Natural Sciences |
| Volume: | 60 |
| Pagination: | 1-167 |
| Publication Type: | Journal Article |
| Year of Publication: | 1990 |
| Authors: | N. De Buck |
| Journal: | Studiendocumenten Royal Belgian Institute of Natural Sciences |
| Volume: | 60 |
| Pagination: | 1-167 |