 | 1997 - 348 páginas
Adoption and use of improved maize seed by small farmers in southeast Guatemala . Submitted for publication as a CIMMYT Economic Working Paper , CIMMYT , Mexico . Sain , G. y H. Barreto . 1996. The adoption of soil conservation ... | |
 | Gustavo Sain - 1997 - 68 páginas
Agronomía Mesoamericana 7 ( 2 ) : 108-115 . ; MARTÍNEZ G .; J.C. 1997. Adoption and use of improved maize seed by small farmers in southeast Guatemala . México , CIMMYT . SANDERS , J.H .; LOPEZ - PEREIRA , M.A. 1996. 63. | |
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