Haque, I., & Lupwayi, N. (1999). Landform and phosphorus effects on nitrogen fixed by annual clovers and its contribution to succeeding cereals in the Ethiopian highlands.
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Cita Chicago Style (17a ed.)
Haque, I., y N.Z Lupwayi. Landform and Phosphorus Effects on Nitrogen Fixed by Annual Clovers and Its Contribution to Succeeding Cereals in the Ethiopian Highlands. 1999.
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Cita MLA (9a ed.)
Haque, I., y N.Z Lupwayi. Landform and Phosphorus Effects on Nitrogen Fixed by Annual Clovers and Its Contribution to Succeeding Cereals in the Ethiopian Highlands. 1999.
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