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01137nam a2200445 i 4500 |
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|a Universidad Nacional Agraria
|b spa
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| 907 |
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|a E10
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| 908 |
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|a E16
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| 911 |
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|a MS
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| 978 |
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|a RSM
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| 979 |
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|a 03-05-2001
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|a RS
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| 981 |
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|a 10/11/2022
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| 991 |
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|a DOC
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| 991 |
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|a ROFE
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| 991 |
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|a ACTUALIZACION REGISTROS 1999
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| 991 |
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|a R101122
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| 035 |
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|a 012248
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| 041 |
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|a eng
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| 092 |
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|a E10 P653
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| 100 |
1 |
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|a Pingali, P.L.
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| 700 |
1 |
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|a Heisey, P.W.
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| 245 |
1 |
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|a Cereal crop productivity in developing countries : past trends and future prospects
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| 260 |
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|a México (México) :
|b ,
|c 1999
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| 264 |
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|a México (México) :
|b ,
|c 1999
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| 300 |
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|a 32 p.
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| 490 |
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|a Economics : Working paper (México)
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| 500 |
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|a Ilus.; 78 ref.
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| 650 |
|
7 |
|a ANALISIS ECONOMICO
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| 650 |
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7 |
|a MAIZ
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| 650 |
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7 |
|a PRODUCCION
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| 650 |
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7 |
|a PAISES EN DESARROLLO
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| 650 |
|
7 |
|a PRODUCTIVIDAD
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| 650 |
|
7 |
|a FACTORES DE PRODUCCION
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| 650 |
|
7 |
|a RIEGO
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| 650 |
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7 |
|a MERCADOS
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| 650 |
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7 |
|a PROYECTOS DE INVESTIGACION
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| 942 |
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|c BK
|2 agris
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| 952 |
|
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|a 01
|b 01
|8 CG
|c CG
|y BK
|p D0386/99
|o E10 P653
|