| Publication Type: | Journal Article |
| Year of Publication: | 1995 |
| Authors: | R. J. Rayner, Dippenaar-Schoeman A. S. |
| Journal: | South African Journal of Science |
| Volume: | 91 |
| Pagination: | 98–100 |
| Publication Type: | Journal Article |
| Year of Publication: | 1995 |
| Authors: | R. J. Rayner, Dippenaar-Schoeman A. S. |
| Journal: | South African Journal of Science |
| Volume: | 91 |
| Pagination: | 98–100 |