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4
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Soil quality and rice productivity problems in Sahelian irrigation schemes / Piet J.A. van Asten.
- Wageningen university and research centre. Department of environmental sciences. Erosion and soil & water conservation group,
- 2003.
- Wageningen :
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Water harvesting in Mediterranean zones : an impact assessment and conomic evaluation : proceedings from EU Wahia project final seminar in Lanzarote / ed. Jan de Graaff and Mohamed Ouessar.
- Wageningen university and research centre. Department of environmental sciences. Erosion and soil & water conservation group,
- 2002.
- Wageningen :
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Consuming the savings : water conservation in a vegetation barrier system at the Central plateau in Burkina Faso / Wim Spaan.
- Wageningen university and research centre. Department of environmental sciences. Erosion and soil & water conservation group,
- 2003.
- Wageningen :
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Soil and water management in spate irrigation systems in Eritrea / Mehreteab Tesfai Hadera.
- Wageningen university and research centre. Department of environmental sciences. Erosion and soil & water conservation group,
- 2001.
- Wageningen :