. Insect and disease conditions in the United States, 1979-83 : what else is growing in our forests?. Forest insects United States; Trees Diseases and pests United States; Plants Disease and pest resistance. Figure 2. Damaged cones. Several species of cone- worms destroy cones, reducing the potential cone crops in seed orchards. F-705637. Figure 3. Radiograph of full, empty, and seed bug-damaged seed. F-705638. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not per
. Insect and disease conditions in the United States, 1979-83 : what else is growing in our forests?. Forest insects United States; Trees Diseases and pests United States; Plants Disease and pest resistance. Figure 2. Damaged cones. Several species of cone- worms destroy cones, reducing the potential cone crops in seed orchards. F-705637. Figure 3. Radiograph of full, empty, and seed bug-damaged seed. F-705638. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Loomis, Robert C; Tucker, Susan; Hofacker, Thomas H; United States. State and Private Forestry; United States. Forest Pest Management. [Washington, D. C. ] : The Service
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Keywords: ., bo, bookcentury1900, bookcollectionbiodiversity, bookleafnumber31
