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_aBorlaug, Norman Ernest. _913901 |
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_aFeeding mankind in the 1980s _b: the role of international agricultural research |
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| 500 | _aSobretiro de : Annual Agricultural Sector Symposio (3 : 1982 : Washington) | ||
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_aAgricultura _xInvestigación. _91577 |
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_aAlimentos _xAbastecimiento. |
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