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International Society for Horticultural Science. Commission on Plant Protection
2
International Society for Horticultural Science. Section for Ornamental Plants
2
International Society for Horticultural Science. Working Group Virus Diseases of Ornamental Plants
2
International Society for Horticultural Science. Working Group on Virus Diseases of Small Fruits
2
Africa Symposium on Horticultural Crops Nairobi, Kenya
1
Bem, F. P.
1
Bergman, B. H. H.
1
Bogers, R. J.
1
Byther, Ralph S.
1
Chastagner, Gary A.
1
Chweya, James A.
1
Conference on Recent Advances in Vegetable Virus Research Wellesbourne, England
1
Converse, Richard H., 1925-
1
Deutsche Gesellschaft für Technische Zusammenarbeit
1
Doss, Robert P.
1
Dunez, J.
1
Empresa Catarinense de Pesquisa Agropecuária
1
Estaçao Experimental de Caçador
1
Hansen, A. J.
1
Horst, R. Kenneth (Ralph Kenneth), 1935-
1
International Committee for Cooperation in Fruit Tree Virus Research
1
International Horticultural Congress
1
International Society for Horticultural Science. Commission for Tropical and Subtropical Horticulture
1
International Society for Horticultural Science. Section Vegetables
1
International Society for Horticultural Science. Section for Fruit
1
International Society for Horticultural Science. Working Group on Apricot Culture and Decline
1
International Society for Horticultural Science. Working Group on Fireblight Research
1
International Society for Horticultural Science. Working Group on Fruit Tree Virus Diseases
1
International Symposium on Diptera Pests in Vegetable Crops Skierniewice, Poland
1
International Symposium on Flower Bulbs Noordwijkerhout, Netherlands
1
International Symposium on Flower Bulbs Seattle, Wash
1
International Symposium on Fruit Tree Virus Diseases
1
International Symposium on Fruit Tree Virus Diseases Thessalonikē, Greece
1
International Symposium on Virus Diseases of Ornamental Plants Ithaca, N.Y.
1
International Symposium on Virus Diseases of Ornamental Plants Sanremo, Italy
1
International Workshop on Apple Culture in the Tropics and Subtropics Florianópolis, Brazil
1
International Workshop on Apricot Culture and Decline: Research and Crop Improvement Davis, Calif
1
International Workshop on Fire Blight Bordeaux, France
1
Kyriakopoulou, P. E.
1
Lisa, V.
1
Lovisolo, O.
1
Murant, A. F.
1
Narkiewicz-Jodko, J.
1
Paulin, J. P. (Jean Pierre)
1
Paunović, S. A.
1
Petri, José Luiz
1
Roosje, G. S.
1
Shier, J. L. (Jennifer L.)
1
Stace-Smith, Richard, 1924-
1
Symposium on Small Fruit Virus Diseases Bordeaux, France
1
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