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00853nam a2200289 i 4500 |
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| 040 |
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|a Universidad Nacional Agraria
|b spa
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| 907 |
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|a P33
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| 911 |
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|a AS
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| 978 |
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|a FMR
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| 979 |
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|a 21/05/2014
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| 991 |
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|a PP
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| 991 |
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|a FMR210514
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| 035 |
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|a 054437
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| 041 |
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|a spa
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| 092 |
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|a PP P33 S718
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| 100 |
1 |
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|a Sotomayor Ramirez, D.=700 1
|a Espinoza, Y.
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| 245 |
0 |
0 |
|a Soil aggregation and organic carbon fractions in the Rio Grande de Arecibo watershed
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| 773 |
0 |
# |
|k The Journal of Agriculture (Puerto Rico)
|z IáN 0041-994x
|z IáN 0041-994x
|g v. 94(1-2) p.25-39
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| 500 |
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|a Ilus., 34 ref.
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| 650 |
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7 |
|a PROPIEDADES FISICO-QUIMICAS SUELO
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| 650 |
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7 |
|a UNIDADES ESTRUCTURALES DE SUELOS
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| 650 |
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7 |
|a CARBONO
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| 650 |
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7 |
|a CUENCAS HIDROGRAFICAS
|
| 650 |
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7 |
|a PUERTO RICO
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| 653 |
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|a CARBONO ORGANICO DEL SUELO
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| 942 |
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|c BK
|2 agris
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