Seligman, C. G. Races of Africa. - 3d ed. - London New York Oxford University Press 1957. - 236 p. illus. 18 cm. - The Home university library of modern knowledge 144 . LCCN: 57059045 /L Subjects--Topical Terms: Ethnology--Africa. LC Class. No.: DT15 / .S45 1957 Dewey Class. No.: 572.96