Title: ư̆̆̇œ̌, æ̆ʺþ̆þ̈ıı̆̃œ̄ð̄Œʺ̄̄
Subjects: Commercial policy, History, Economic policy, Commerce, Merchant marine
Places: China
People: Joseph Needham (1900-1995)
Time periods: To 1644, Ming dynasty, 1368-1644