The development of pear culture.
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| Format: | Texto biblioteca |
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1964
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| Subjects: | PLANT DISEASES, VARIETIES, PEARS, PYRUS, FERTILIZER APPLICATION, CULTURAL METHODS, PLANT PROTECTION, MALADIE DES PLANTES, VARIETE, POIRE, FERTILISATION, MODE DE CULTURE, PROTECTION DES PLANTES, ENFERMEDADES DE LAS PLANTAS, VARIEDADES, PERA, APLICACION DE ABONOS, METODOS DE CULTIVO, PROTECCION DE LAS PLANTAS, |
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