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| 008 | 971013s1991 r 00010 d | ||
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| 090 | _aFolleto 12842 | ||
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_aOkigbo, Bede N. _982939 |
| 245 | 0 |
_aDevelopment of sustainable agricultural production systems in Africa _b: roles of international agricultural research centers and national agricultural research systems |
|
| 260 |
_aIbadan, Nigeria : _bInternational Institute of Tropical Agriculture, _c1991 |
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| 300 |
_a65 p. _b: ilus |
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| 590 |
_aBATCH-UPD _b10 _c20130110 _lUCH01 _h0026 |
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_aCONVERSION _b10 _c20130109 _lUCH01 _h1303 |
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| 650 | 1 | 4 |
_aAgricultura de subsistencia. _91998 |
| 650 | 1 | 4 |
_aAgricultura _xAfrica _zAfrica. _9175391 |
| 650 | 1 | 4 |
_aAgricultura _xInvestigacion _xAfrica. _91578 |
| 650 | 1 | 4 |
_aSistemas de producción. _9106767 |
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