Plant introduction and plant quarantine.
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| Format: | Texto biblioteca |
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1961
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| Subjects: | DISEASE CONTROL, PEST INSECTS, PLANT PROTECTION, QUARANTINE, PLANT INTRODUCTION, CONTROLE DE MALADIES, INSECTE NUISIBLE, PROTECTION DES PLANTES, QUARANTAINE, INTRODUCTION DE PLANTES, CONTROL DE ENFERMEDADES, INSECTOS DANINOS, PROTECCION DE LAS PLANTAS, CUARENTENA, INTRODUCCION DE PLANTAS, |
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