NavGeneral InfoEmail Print Geography Nigeria (NGA) Ibadan Time period covered 01/1957 - 12/1958 Data type Survey Summary A report may be available through the library system. Keywords Tuberculosis Citation Contributors World Health Organization (WHO) Publication year 1956 Suggested citation World Health Organization (WHO). Nigeria - Ibadan Tuberculosis Survey 1957-1958. 1956. GHDx Entry last modified on: Nov 6, 2018