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35
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Assessment of soil nutrient depletion in sub-Saharan Africa : 1983-2000 / J.J. Stoorvogel, E.M.A. Smaling.
- Winand Staring centre,
- 1990.
- Wageningen :
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La capacité de charge du département de Tô : une étude de la situation fourragères dans la savane du centre-sud du Burkina Faso / Peter Egging.
- Université agronomique Wageningen. Unité d'enseignement et recherche des grandes cultures et des cultures fourragères [etc.],
- 1990.
- Wageningen :
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Contribution à l'étude des stratégies de production dans le système agricole de la zone d'Agou, Togo / Kodjovi Amegadjen...[et al.].
- International centre for development oriented research in agriculture,
- 1990.
- Wageningen :
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Management of agropastoral systems in a semiarid region / E.D. Ungar.
- Pudoc,
- 1990.
- Wageningen :
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Chicken farming / [ed. STOAS].
- STOAS,
- 1990.
- Wageningen :
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Constraints to and opportunities for agricultural diversification of a rice-based farming system in the lower-Northern region of Thailand, Phitsanulok Province, Bang Ra Kam District / Khalfan Gajian...[et al.].
- International centre for development oriented research in agriculture,
- 1990.
- Wageningen :
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Agricultural research and extension : a contribution to understanding of the linkages with small scale farmers : a case study in Kumba Corridor agro-ecological zone, SWP, Cameroon / Jose Arze...[et al.].
- International centre for development oriented research in agriculture,
- 1990.
- Wageningen :
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An analysis of agricultural and livestock production systems in Usagara division, Tanzania / Usman Hassan Ahmed...[et al.].
- International centre for development oriented research in agriculture,
- 1990.
- Wageningen :
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Traditional birth control methods used by the Shona-speaking people in Zimbabwe / Inge Lardinois.
- Agricultural university. Department of environmental and tropical health,
- 1990.
- Wageningen :
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Damage-controlled logging in managed tropical rain forest in Suriname / J. Hendrison.
- Wageningen agricultural university,
- 1990.
- Wageningen :