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|a Universidad Nacional Agraria
|b spa
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907 |
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|a F04
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908 |
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|a E14
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911 |
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|a AMS
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978 |
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|a rs
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979 |
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|a 23-11-2001
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980 |
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|a RS/MDR
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981 |
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|a 08/07/2021
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991 |
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|a TEXTO
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991 |
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|a PASIVO
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991 |
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|a PAS7
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991 |
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|a ROC
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991 |
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|a ACTUALIZACION REGISTROS 1996
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991 |
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|a R2176
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020 |
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|a ISBN 0-7923-3608-9
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|a 014436
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|a spa
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092 |
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|a P A50 I61ec
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100 |
1 |
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|a Breman, H.
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245 |
1 |
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|a Sustainable agriculture in the Sahel? (Integrated farming perennials and fertilizers)
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773 |
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|t Eco-regional approaches for sustainable land use and food production : Proceedings of a symposium on eco-regional approaches in agricultural research, 12-16 Dec 1994, ISNAR, The Hague
|d Dordrecht (The Netherlands) : Kluwer Academic Publishers , 1995
|x ISBN 0-7923-3608-9
|k Systems approaches for sustainable agricultural development (The Netherlands)
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300 |
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|a p. 213-235
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500 |
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|a 36 ref.
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650 |
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|a APLICACION DE ABONOS
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650 |
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7 |
|a PROYECTOS DE DESARROLLO
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650 |
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|a INVESTIGACION
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650 |
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|a SOSTENIBILIDAD
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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 L0425/96
|o P A50 I61ec
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