Sumner, A. T. A handbook of the Sherbro language / A.T. Sumner. - London: Pub. by the Crown agents for the colonies, for the government of Sierra Leone, 1921. - xii, 132 pages: folded table; 21 cm. - LCCN: 44039182 Nat. Bib. Agency Control No.: 004113666 Uk Subjects--Topical Terms: Bullom So language.Bullom So language. LC Class. No.: PL8093 / .S8 Dewey Class. No.: 496 / S956ha