The Balsam Woolly Aphid Problem in Oregon and Washington (Classic Reprint)
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Fraser Fir and Balsam Woolly Aphid: Summary of Information (Classic Reprint)
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Infestation Characteristics of the Balsam Woolly Aphid in the Pacific Northwest (Classic Reprint)
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Monterey Bug Buster II - Synthetic Insecticide - 8 Ounce Concentrate - Apply Using a Sprayer Following Mix Instructions
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Status of the Balsam Woolly Aphid on Mount Mitchell State Park, North Carolina, 1968 (Classic Reprint)
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The Effect of Balsam Woolly Aphid Infestation on Fuel Levels in Spruce-Fir Forests of Great Smoky Mountains National Park (Classic Reprint)
SURVIVAL OF THE BALSAM WOOLLY APHID ON ABIES LOGS
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A METHOD OF SAMPLING THE BALSAM WOOLLY APHID ON FRASER FIR IN NORTH CAROLINA
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Field Guide to the Flower Flies of Northeastern North America (Princeton Field Guides Book 118)
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Status of Balsam Woolly Aphid, Adelges Piceae (Ratz.) On Roan Mountain, Toecane Ranger District, Pisgah National Forest, N. C., 1974 (Classic Reprint)
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