Distribution and density of scale-insects (Homoptera, Coccoidea) on olive trees in eastern Sicily Distribution and density of scale-insects (Homoptera, Coccoidea) on olive trees in eastern Sicily

by Longo, S. (Catania Univ. (Italy)), Commission of the European Communities, Brussels (Belgium). Directorate-General for Agriculture eng, Cavallaro, R. (ed.), Crovetti, A. (ed.), International Organization for Biological Control, Paris (France). West Palaearctic Regional Section eng, FAO, Rome (Italy) eng
Published 1985