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    Phosphorus fertilization and management in soils of Sub-Saharan Africa by Margenot, Andrew J., Singh, Bal Ram, Rao, Idupulapati M., Sommer, Rolf

    Published 2016
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    Book Chapter
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    Potential of tillage, agropastoral, and planted fallow systems in low-fertility tropical soils in Latin America by Singh, Bal Ram, Rao, Idupulapati M., Barrios, Edmundo, Amézquita Collazos, Edgar

    Published 2004
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    Book Chapter

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