Fifth meeting of the Eastern African Sub-Committee for Soil Correlation and Land Evaluation : Wad Medani, Sudan, 5-10 December 1983
著者
書誌事項
Fifth meeting of the Eastern African Sub-Committee for Soil Correlation and Land Evaluation : Wad Medani, Sudan, 5-10 December 1983
（World soil resources report, 56）
Food and Agriculture Organization of the United Nations, 1985