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230522s1997 dcua gr ||||||eng d |
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|a 0821338781
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| 040 |
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|a Sistema de Bibliotecas de la Universidad de Costa Rica
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| 245 |
1 |
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|a Agricultural extension and research :
|b achievements and problems in national systems /
|c Dennis L. Purcell. John R. Anderson.
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| 260 |
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|a Washington, D.C. :
|b The World Bank,
|c 1997.
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| 300 |
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|a xxi, 282páginas :
|b ilustraciones en blanco y negro.
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| 490 |
0 |
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|a A World Bank operations evaluation study
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| 700 |
1 |
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|a Anderson, Jock R.
|d 1941-
|e Autor/a
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| 949 |
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|a -AEM
|