| Publication Type: | Government Report |
| Year of Publication: | 1906 |
| Authors: | F. V. Theobald |
| Series Title: | Report of the Wellcome Research Laboratories at the Gordon Memorial College, Khartoum |
| Pagination: | 67–83 |
| Publisher: | Department of Education, Sudan Government, Khartoum |
| Report Number: | 2 |