Nkebi ahịrịokwu nke mbụ: Fishman gụsịrị akwụkwọ na Mahadum Brown, gụsịrịkwa akwụkwọ na Mahadum Columbia n'ihe gbasara akụnụba. Nkebi ahịrịokwu nke abụọ: Fishman gụsịrị akwụkwọ na Mahadum Columbia na Mahadum Brown na Economics. Ajụjụ: Ọ̀ bụ otu ihe ka ahịrịokwu nke mbụ na nke abụọ pụtara? Ee ma ọ bụ Ee e?
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