. . . . "A history of the American Board missions in Angola, 1880-1940"@en . . "A History of the American board missions in Angola : 1880-1940" . . . . . . . . . . . . . . . . . . "A history of the American Board Missions in Angola, 1880-1940"@en . . "A history of the American Board missions in Angola 1880-1940"@en . . . . . "Angola" . . "American Board of Commissioners for Foreign Missions." . .