balsam woolly aphid

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The Balsam Woolly Aphid Problem in Oregon and Washington (Classic Reprint) from $12.27	Fraser Fir and Balsam Woolly Aphid: Summary of Information (Classic Reprint) from $13.72
Infestation Characteristics of the Balsam Woolly Aphid in the Pacific Northwest (Classic Reprint) from $11.97	Status of the Balsam Woolly Aphid on Mount Mitchell State Park, North Carolina, 1968 (Classic Reprint) from $22.97
The Effect of Balsam Woolly Aphid Infestation on Fuel Levels in Spruce-Fir Forests of Great Smoky Mountains National Park (Classic Reprint) from $11.97	SURVIVAL OF THE BALSAM WOOLLY APHID ON ABIES LOGS from $7.90
A METHOD OF SAMPLING THE BALSAM WOOLLY APHID ON FRASER FIR IN NORTH CAROLINA from $6.90	Field Guide to the Flower Flies of Northeastern North America (Princeton Field Guides Book 118) from $15.37
STUDIES OF PREDATORS OF THE BALSAM WOOLLY APHID, ADELGES PICEAE (RATZ.) (HOMOPTERA: ADELGIDAE) IV. NEOLEUCOPIS OBSCURA (HAL.) (DIPTERA: CHAMAEMYIIDAE), AN INTRODUCED PREDATOR IN EASTERN CANADA from $9.90	Status of Balsam Woolly Aphid, Adelges Piceae (Ratz.) On Roan Mountain, Toecane Ranger District, Pisgah National Forest, N. C., 1974 (Classic Reprint) from $22.97