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Soil science and fertilization for use in agricultural education and training in tropical and subtropical countries with minimal equipment requirements : practical lessons / Agricultural education division, Ministry of agriculture and fisheries.
- Ministry of agriculture and fisheries. Agricultural education division,
- [ca. 1987].
- The Hague :
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A collection of practice lessons in plant protection for agricultural education in the tropics with minimal equipment requirements / comp. by Agricultural education division, Ministry of agriculture and fisheries.
- Ministry of agriculture and fisheries. Agricultural education division,
- [ca. 1984].
- The Hague :
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A collection of practicals in agricultural botany for agricultural education in the (sub-)tropics with minimal equipment requirements / comp. by Agricultural education division, Ministry of agriculture and fisheries.
- Ministry of agriculture and fisheries. Agricultural education division,
- [ca. 1987].
- The Hague :