New outbreaks and current distribution of fire blight of pear and apple in Northern Europe
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| Format: | Texto biblioteca |
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1970
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| Subjects: | APPLES, PEARS, BLIGHT, GEOGRAPHICAL DISTRIBUTION, EPIDEMICS, PLANT PROTECTION, POMME, POIRE, DEPERISSEMENT, DISTRIBUTION GEOGRAPHIQUE, EPIDEMIE, MANZANA, PERA, TIZON, DISTRIBUCION GEOGRAFICA, EPIDEMIA, PROTECTION DES PLANTES, PROTECCION DE LAS PLANTAS, |
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