Beddard, F. E. (1901). On some earthworms from British East Africa; and on the spermatophores of Polytoreutus and Stuhlmannia. Journal of Zoology. 70(2): 336-365.
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Beddard, F. E.
1901
On some earthworms from British East Africa; and on the spermatophores of Polytoreutus and Stuhlmannia.