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Recherche sur cinq exploitations en transition : étude sur les hauts-plateaux de Madagascar, dans la province de Fianarantsoa / J. Koster.
- auteur,
- 1968.
- Wageningen :
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Study-tour report on the growing of fibre flax and kenaf in Egypt (April-May 1967) / J.C. Friederich.
- 861.6
- Proefstation voor de akker- en weidebouw,
- 1968.
- Wageningen :
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Agricultural sciences and the world food supply : an international symposium, organized by the Agricultural university Wageningen, the Netherlands, on the occasion of its golden jubilee, 4-6 March 1968 / [contrib. E. de Vries...et al.].
- Veenman,
- 1968.
- Wageningen :
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Irrigation requirements for double cropping of lowland rice in Malaysia / G.A.W. van de Goor, G. Zijlstra.
- 855.6
- Veenman,
- 1968.
- Wageningen :
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Agricultural extension in the developing countries : a bibliography / comp. by C.A. de Vries.
- International institute for land reclamation and improvement (ILRI),
- 1968.
- Wageningen :