Control of scale insects and mealybugs on ornamentals Schread, John C. creator text book New Haven Connecticut Agricultural Experiment Station 1970 1970
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ENG Cover title. Pseudococcus Scale insects SB939 .S37 Bulletin (Connecticut Agricultural Experiment Station), 710 https://www.biodiversitylibrary.org/bibliography/51098 4625654 10.5962/bhl.title.51098 UUM