Economic co-operation among Negro Americans: report of a social study made by Atlanta university under the patronage of the Carnegie institution of Washington, D. C.; together with the Proceedings of the 12th Conference for the study of the Negro problems, held at Atlanta university, on Tuesday, May the 28th, 1907 / Edited by W. E. Burghardt Du Bois. Du Bois, W. E. B. Conference for the Study of the Negro Problems. (12th : 1906 : Atlanta University) African Americans Economic conditions. Cooperation United States. E185.5 .A88 no. 12 Microfilm 04171 E 973 DUE Includes index. Replace; LC copy under E185.5 .A88 no. 12 replaced by preservation microfilm. DLC Atlanta: The Atlanta university press, 1907. 1907. 1907 Text 184 p. : eng The Atlanta University publications, no. 12 United States.