Citation
“Sawyerr, J. Laurence F.; United Nations. Economic and Social Council; United Nations. Economic Commission for Africa (1964-10). Latest conclusions regarding training centres for aerial surveys in Africa / J. Laurence F. Sawyerr. UN. ECA. Experts on Regional Centres for Training in Photogrammetry and Airborne Geophysical Surveys and for Interpreting Aerial Surveys (1964, Oct. 21 - 31: Addis Ababa, Ethiopia). Addis Ababa :. © UN. ECA,. https://hdl.handle.net/10855/5304”
Conference
UN. ECA. Experts on Regional Centres for Training in Photogrammetry and Airborne Geophysical Surveys and for Interpreting Aerial Surveys (1964, Oct. 21 - 31: Addis Ababa, Ethiopia)