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|a Universidad Nacional Agraria
|b spa
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|a A50
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| 911 |
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|a MS
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| 978 |
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|a bgf
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| 979 |
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|a 05-10-2004
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|a DOC
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|a OCT-04Rá
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|a 019343
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|a eng
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|a A50 T836
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1 |
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|a Tripp, R.
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1 |
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|a Data collection, site selection and farmer participation in on-farm experimentation
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| 260 |
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|a Mexico (Mexico) :
|b ,
|c 1980
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| 264 |
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|a Mexico (Mexico) :
|b ,
|c 1980
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| 300 |
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|a 29 p.
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| 490 |
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|a Working paper (Mexico)
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|a Ilus.
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| 650 |
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7 |
|a INSTITUCIONES DE INVESTIGACION
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| 650 |
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7 |
|a EXPERIMENTACION EN CAMPO
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| 650 |
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7 |
|a COOPERACION INTERNACIONAL
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| 650 |
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7 |
|a PROYECTOS DE DESARROLLO
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| 650 |
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7 |
|a AGENTES DE EXTENSION
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| 650 |
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7 |
|a TRANSFERENCIA DE TECNOLOGIA
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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 D0819/04
|o A50 T836
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