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| LEADER |
00820nam a2200253 i 4500 |
| 007 |
ta |
| 040 |
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|a Universidad Nacional Agraria
|b spa
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| 907 |
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|a F40
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| 911 |
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|a AS
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| 900 |
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|a Francis Martínez
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| 978 |
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|a FMR
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| 979 |
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|a 24/01/2018
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| 991 |
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|a FMR24118
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| 035 |
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|a 063883
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| 041 |
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|a spa
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| 092 |
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|a PP F40 G643
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| 100 |
1 |
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|a Gonzalez Chavez, Ma. del Carmen A.=700 1
|a Ferrera Cerrato, Ronald
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| 700 |
1 |
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|a Garcia Espinoza, Roberto
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| 700 |
1 |
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|a Martinez Garza, Angel
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| 245 |
1 |
3 |
|a La fijacion biologica de nitrogeno en un agroecosistema de bajo ingreso externo de energia en Tamulte de Las Sabanas, Tabasco
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| 773 |
0 |
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|k Agrociencia: Serie Agua-Suelo-Clima (Mexico)
|z 0188-3089
|z 0188-3089
|g v. 1(3) p.133-153
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| 500 |
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|a Ilus., 46 ref.
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| 653 |
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|a FIJACION BIOLOGICA DEL NITROGENO
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| 942 |
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|c BK
|2 agris
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