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Date: 2011-06-22 11:21:45 Hemiptera Ornamental trees Hemlock woolly adelgid Parasites Tsuga canadensis Tsuga caroliniana Adelges Adelgidae T. chinensis Flora of the United States Flora Tsuga		Untitled Add to Reading List Source URL: arnoldia.arboretum.harvard.edu Download Document from Source Website File Size: 331,21 KB Share Document on Facebook

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