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_aErenstein, Olaf C.A. _937289 |
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_aThe economics of soil conservation in developing countries : _bthe case of crop residue mulching _c/by Olaf C.A. Erenstein |
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_aWageningen : _bWageningen University, _c1999. |
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| 300 | _a301 p. | ||
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_aErosión. _937335 |
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_aLabranza de conservación. _964308 |
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_aSuelos _xConservación. _9110283 |
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| 905 | _aAlejandra Carrasco M. | ||
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