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Direct and residual effects of organic and inorganic fertilizers on soil chemical properties, microbial components and maize yield under long-term crop rotation
Thesis (PhD (Plant Production and Soil Science))--University of Pretoria, 2003.
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University of Pretoria
2013
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| Summary: | Thesis (PhD (Plant Production and Soil Science))--University of Pretoria, 2003. |
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