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980916s1980 xxu ||||| eng |
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|a 2933723
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|a Sistema de Bibliotecas de la Universidad de Costa Rica
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|a eng
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0 |
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|a 630.72
|b G464f
|2 21
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| 100 |
1 |
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|a Gilbert, Elon H.
|e Autor/a
|4 aut
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| 245 |
1 |
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|a Farming systems research :
|b a critical appraisal /
|c by Elon H. Gilbert, David W. Norman, Fred E. Winch.
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| 260 |
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|a East Lansing, Mich. :
|b Departamento of Agriculture and Michigan State University,
|c 1980.
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| 300 |
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|a xiii, 135 páginas :
|b ilustraciones.
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| 650 |
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|a INVESTIGACION AGRICOLA
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| 700 |
1 |
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|a Norman, David W.
|d 1939-
|e Autor/a
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| 700 |
1 |
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|a Winch, Fred E.
|e Autor/a
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| 912 |
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|a 09-AUG-2006 - NAVARRO BENAVIDES, MARIA ISABEL
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| 916 |
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|a Reconversión
|