. Recent research on foliage diseases : conference proceedings : Carlisle, Pennsylvania, May 29-June 2, 1989. Leaves Diseases and pests United States Congresses. AGE (Days after emergence) A(3E (Days after emergence). 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 Merrill, William; Ostry, Michael E; United States. Forest Service; International Union of Forestry Research Organizations. Working Party on Foliage Diseases. Was
. Recent research on foliage diseases : conference proceedings : Carlisle, Pennsylvania, May 29-June 2, 1989. Leaves Diseases and pests United States Congresses. AGE (Days after emergence) A(3E (Days after emergence). 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 Merrill, William; Ostry, Michael E; United States. Forest Service; International Union of Forestry Research Organizations. Working Party on Foliage Diseases. Washington, D. C. : U. S. Dept. of Agriculture, Forest Service
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