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h s aldwinckle
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Compendium of apple and pear diseases
H. S. Aldwinckle · Amer Phytopathological Society
100 sayfa · 1990
Pear / Apples / Diseases and pests / Pears / Plantenziekten
Compendium of apple and pear diseases and pests
Turner B. Sutton, James F. Walgenbach, H. S. Aldwinckle, A. Agnello · APS Press/The American Phytopathological Society
218 sayfa · 2014
Apples / Diseases and pests / Identification / Control / Pears