Span : Shell public health and agricultural news /
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| Main Author: | |
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| Format: | Texto biblioteca |
| Language: | spa |
| Published: |
Londres : Shell International Chemical Company,
1960
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| Subjects: | Agricultura, Patología vegetal, PRODUCCION AGRICOLA, PESTICIDAS, ARADO QUIMICO, PRADERAS, PALUDISMO, EXPLOTACION AGRICOLA, SEMILLA, |
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