تحديد البحث
لائحة الكتب
3
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Selected bibliography on soils and land use in Sierra Leone, West Africa / comp. by J.C. Dijkerman.
- 862.5
- Agricultural university. Department of soil science and geology,
- 1976.
- Wageningen :
-
Simulation of growth of managed forests in the Atlantic zone of Costa Rica and analysis of nutrient cycling to determine surpluses and shortages / R.L.H. Poels.
- Agricultural university. Department of soil science and geology,
- 1994.
- Wageningen :
-
Soil formation by termites : a study in the Kisii area, Kenya / W.G. Wielemaker.
- 864.5
- Agricultural university. Department of soil science and geology,
- 1984.
- Wageningen :