Nkebi ahịrịokwu 1: Ọ bụ onye otu nke Royal Colonial Institute, Royal Statistical Society na Royal Geographic Society (RGS). Nkebi ahịrịokwu 2: Ọ bụ onye otu nke Royal Colonial Institute, Royal Geographic Society, na Royal Statistical Society (RGS). Ajụjụ: Ọ̀ bụ otu ihe ka ahịrịokwu nke mbụ na nke abụọ pụtara? Ee ma ọ bụ Ee e?
Ee e