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_aMyren, Delbert T. _979961 |
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_aLos programas sobre maíz y trigo de la Fundación Rockefeller en México _b: análisis comparativo de sus enfoques y resultados |
| 500 | _aSobretiro de: Subsistence Agriculture and Economica Development. Chicago, Aldine, 1969. pp. 1-18 | ||
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_aFundación Rockefeller _944006 |
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_aMaíz _xInvestigación. _970984 |
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_aTrigo _xInvestigación. _9115046 |
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