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_aHeisey, Paul W. _953382 |
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_aAccelerating the transfer of wheat breeding grains to farmers : _ba study of the dynamics of varietal replacement in Pakistan |
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_aMéxico, D. F. : _bCIMMYT, _c1990 |
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_a94 p. _bilus., gráfs. |
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_aTrigo _xMejoramiento. _9115057 |
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_aTrigo _xPakistán. _9115072 |
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_aTrigo _xVariedades. _9115119 |
| 710 | 0 | _aCentro Internacional de Mejoramiento de Maíz y Trigo. | |
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