Field observation on the incidence of sugar beet aphid-borne viruses, and their vector.

Citation:
El-Nagar, S., A. - S. A. M., and A. H. Amin., "Field observation on the incidence of sugar beet aphid-borne viruses, and their vector.", The 8 th Cong. of the Mediter. Phytopathol Union, Agadir, Morocco. 1990., 1990.

Abstract:

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Notes:

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