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| Firstname: | H. |
| Surname: | van Keulen |
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| Heterogeneity in farmers' production decisions and its impact on soil nutrient use: results and implications from northern Nigeria, Berkhout, E., Schipper, R. A., van Keulen, H. and Coulibaly, O., in: Agricultural Systems, volume 104, number 1, pages 63-74, ISSN 0308-521X, 2011. [DOI] |
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