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Electronic Theses & Dissertations
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Theses
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English
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Conservation tillage
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Phosphates
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Phosphatic fertilizers
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The effect of tillage on phosphorus transformation in soils
Daroub, Samira Hassan
Text (1994)
Part of
Electronic Theses & Dissertations
Chemical and physical factors affecting the relative availability of inorganic phosphorus in soils
Juo, A. S. R.
Text (1966)
Part of
Electronic Theses & Dissertations
Effectiveness of phosphate rocks in Colombian soils as measured by crop response and soil phosphorus levels
Hammond, Lawrence Leroy, 1945-
Text (1977)
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Electronic Theses & Dissertations
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