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African Journal of Range and Forage Science -- Vol. 10 No. 2 (1993):
Research Note Organic matter content of a soil in a semi-arid climate with three long-standing veld conditions |
27 USD |
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Journal of Aquatic Sciences -- Vol. 14 No. 1 (1999): Fertilization of Earth Ponds. I: Effects on Physico-Chemical Characteristics and Eutrophication of Pond Water and Soil | 27 USD |
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African Journal of Range and Forage Science -- Vol. 4 No. 3 (1987): Local evidence for tolerance of birdsfoot trefoil (Lotus corniculatus) to acid soils. | 27 USD |
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| Total: 81 USD | |||
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