Plant disease situation in the United states.
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| Format: | Texto biblioteca |
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1957
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| Subjects: | DISEASE CONTROL, MECHANICAL DAMAGE, CHERRIES, MALUS, CANKERS, EPIDEMICS, PLANT DISEASES, CONTROLE DE MALADIES, DEGAT MECANIQUE, CERISE, CHANCRE, EPIDEMIE, MALADIE DES PLANTES, CONTROL DE ENFERMEDADES, DANOS MECANICOS, CEREZA, NECROSIS CANCEROSA, EPIDEMIA, ENFERMEDADES DE LAS PLANTAS, |
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