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A Study on the Nutriology Promoting the Population Increase of Eulecanium gigantea by Urban Pollution A STUDY ON THE ACCUMULATIONS OF URBAN AIR POLLUTIONS SO2 AND Pb IN THE BODY OF EULECANIUM GIGANTEA (S.)(COCCIDAE) AND THEIR HOST-PLANT SOPHORA JAPONICA Soral Crypsis: Protective Mimicry of a Coccid on an Indian Fern The Ultra-Morphology and Chemical Composition of Waxes Secreted by a Scale Insect Physokermes shanxiensis (Homoptera : Coccidae) The Bunge Prickly-Ash Tree Damaged by a Mealybug,Phenacoccus azaleae Attracting the Ladybug, Harmonia axyridis