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1Tests to assess the damage caused by the olive psyllid Euphyllura olivina Costa (Homoptera, Psyllidae): preliminary data on the harmfullness threshold Tests to assess the damage caused by the olive psyllid Euphyllura olivina Costa (Homoptera, Psyllidae): preliminary data on the harmfullness thresholdby Jardak, T. (Institut de l'Olivier de Tunisie, Sfax (Tunisia)), Commission of the European Communities, Brussels (Belgium). Directorate-General for Agriculture eng, Smiri, H., Moalla, M., Khalfallah, H., Cavallaro, R. (ed.), Crovetti, A. (ed.), International Organization for Biological Control, Paris (France). West Palearctic Regional Section eng, FAO, Rome (Italy) eng
Published 1985Texto bibliotecaFAO IT