共 14 条
- [1] CZEKANOWSKI J, 1924, FORSCHUNGEN NIL KONG, V2, P615
- [2] ROYEN ZBG, 1929, NOMINALEN KLASSIFIKA
- [3] STRUCK B, MSOS, V13, P133
- [4] Z EG SPR, V15, P266
- [5] 1908, G GRENFELL CONGO
- [6] SPRACHEN HAMITEN, P21
- [7] 1904, UGANDA PROTECTORATE
- [8] 1919, COMP STUDY BANTU SEM
- [9] 1911, ZDMG, P271
- [10] 1936, ENTSTEHUNG FLEKTIERE, P63