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Fish as biocontrol agents in rice : the potential of common carp Cyprinus carpio (L.) and Nile tilapia Oreochromis niloticus (L.) / Matthias Halwart.
- Margraf,
- 1995.
- Weikersheim :
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Wind erosion in West Africa : the problem and its control : proceedings of the international symposium, University of Hohenheim, Germany, 5-7 December 1994 / ed. Barbara Buerkert, Bruce E. Allison, Matthias von Oppen.
- Margraf,
- cop. 1996.
- Weikersheim :
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Institutions and technologies for rural development in West Africa : proceedings of the international symposium organized by the University of Hohenheim, Germany 16-22 February, 1996 in Cotonou, Benin = Institutions et technologies pour le développement rural en Afrique de l'Ouest / ed. Thomas Bierschenk, Pierre-Yves Le Meur, Matthias von Oppen.
- Margraf,
- cop. 1997.
- Weikersheim :
-
The evaluation of technical and institutional options for small farmers in West Africa : proceedings of an International workshop held on April 21-22-1998 at the University of Hohenheim as part of the special research programme 308 adapted farming in West Africa / ed. Peter Lawrence, Geneviève Renard and Matthias von Oppen.
- Margraf,
- cop. 1998.
- Weikersheim :