Christian J M. G. Pieri. (1992). Fertility of soils: A future for farming in the West African Savannah (With 87 figures). Heidelberg, Berlin: Springer-Verlag.
Trích dẫn kiểu ChicagoChristian J M. G. Pieri. Fertility of Soils: A Future for Farming in the West African Savannah (With 87 Figures). Heidelberg, Berlin: Springer-Verlag, 1992.
Deismireacht MLAChristian J M. G. Pieri. Fertility of Soils: A Future for Farming in the West African Savannah (With 87 Figures). Heidelberg, Berlin: Springer-Verlag, 1992.
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