Nkebi ahịrịokwu nke mbụ: Fishman gụsịrị akwụkwọ na mahadum Brown ma nweta nzere masta na akụnaụba na mahadum Columbia. Ahịrịokwu nke abụọ: Fishman gụsịrị akwụkwọ na Mahadum Brown ma nweta akara ugo mmụta na Mahadum Columbia 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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