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Tribal elite : a base for social stratification in modern Sudan
Ahmed, Abdel Ghaffar M., (1976)
The policy impacts on farmer's production and resource use in the irrigated scheme of Gezira, Sudan : a case of change from a controlled subsidised system to a free market mode of production
Adam, Mohamed Abdelgadir, (1996)
Agricultural credit in the Gezira
Adam, Farah Hassan, (1973)
Urbanisation and exploitation : the role of small centres
Ahmad, Abdel Ghaffar Muhammad, (1979)
Political and economic reforms, transformations and gender issues
Prah, Kwesi Kwaa, (2000)