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7
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Carboxylates and the uptake of ammonium by excised maize roots / H. Breteler.
- Centre for agricultural publishing and documentation (PUDOC),
- 1975.
- Wageningen :
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Erosion in the Western part of the Kisii district / by G.R. Hennemann, J.H. Kauffman.
- Agricultural university,
- 1975.
- Wageningen :
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Soil survey interpretation : an annotated bibliography : selected references 1960-1972 / comp. by Ronald H. Brook.
- International institute for land reclamation and improvement (ILRI),
- 1975.
- Wageningen :
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La culture de l'amarante, légume-feuilles tropical avec référence spéciale au sud-Dahomey / G.J.H. Grubben.
- Veenman,
- 1975.
- Wageningen :
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Computation of the absolute maximum food production of the world : a contribution to the research project on "Problems of population doubling and food supply" / by P. Buringh, H.D.J. van Heemst and G.J. Staring.
- Agricultural university. Department of tropical soil science,
- 1975.
- Wageningen :
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Simulation of water use and herbage growth in arid regions / H. van Keulen.
- Centre for agricultural publishing and documentation,
- 1975.
- Wageningen :
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Simulation of the water balance of arable land and pastures / G.F. Makkink and H.D.J. van Heemst.
- Centre for agricultural publishing and documentation (PUDOC),
- 1975.
- Wageningen :