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_aBrouwer, J. _915603 |
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_aSoil and crop growth variability in the Sahel : _bhighlights of research (1990-95) at ICRISAT Sahelian Center _c/by J. Brouwer and J. Bouma |
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_aWageningen, The Netherlands : _bAgricultural University of Wageningen, _c1997. |
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_a42 p. : _bilus. |
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_aAgricultura _xInvestigación _xAfrica _zAfrica. _9175462 |
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_aCultivos _xAfrica. _930223 |
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_aSuelos _zAfrica. _9110516 |
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_aBouma, J. _914763 |
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| 901 | _aBK | ||
| 905 | _aLilia Sánchez G. | ||
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