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The income efficiency of government expenditure on agricultural policy
Koester, Ulrich, (1987)
Partial market reform, dual marketing channels and food security under structural adjustment : a case study of maize marketing in Zimbabwe
Nuppenau, Ernst-August, (1994)
Regionaler Handel mit Agrarprodukten : das Fallbeispiel des südlichen Afrikas
Nuppenau, Ernst-August, (1998)