Characterization of spatial soil variability and its effect on Millet yield on Sudano-Sahelian coversands in SW Niger von Voortman, Roelf L., Brouwer, Joost, Albersen, Peter J.

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African Land Ecology: Opportunities and Constraints for Agricultural Development von Voortman, Roelf L, Sonneveld, Ben G. J. S, Keyzer, Michiel A

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The Biofuel Controversy von Keyzer, Michiel A., Merbis, Max D., Voortman, Roelf L.

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Spatial dimensions of precision agriculture: a spatial econometric analysis of millet yield on Sahelian coversands von Florax, Raymond J.G.M, Voortman, Roelf L, Brouwer, Joost

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empirical analysis of the simultaneous effects of nitrogen, phosphorus and potassium in millet production on spatially variable fields in SW Niger von Voortman, Roelf L, Brouwer, Joost

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Spatial dimensions of precision agriculture: a spatial econometric analysis of millet yield on Sahelian coversands von Florax, Raymond J.G.M., Voortman, Roelf L., Brouwer, Joost

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Localization and characterization of populations vulnerable to climate change: Two case studies in Sub-Saharan Africa von van Wesenbeeck, Cornelia F.A., Sonneveld, Ben G.J.S., Voortman, Roelf L.

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Research needs and methods for decentralised economic planning von Keyzer, Michiel A, Voortman, Roelf L

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Book Review: Lykke E. Andersen, Clive W.J. Granger, Eustàquio J. Reis, Diana Weinhold and Sven Wunder, The Dynamics of Deforestation and Economic Growth in the Brazilian Amazon, Ca... von Voortman, Roelf L

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Recent historical climate change and its effect on land use in the eastern part of West Africa von Voortman, Roelf L.

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The dynamics of deforestation and economic growth in the Brazilian Amazon von Andersen, Lykke E, Granger, Clive W.J., Reis, Eustáquio J, Weinhold, Diana, Wunder, Sven, Voortman, Roelf L

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