. Research for tomorrow's forests : 1983 research accomplishments. --. Forests and forestry Research United States. NEOCHEK-S BIOLOGICAL INSECTICIDE FOR THE EUROPEAN PINE SAWFLY, NEODIPRION SERTIFER. Newly registered Neochek-S equals trouble for the European pine sawfly, but good news for forest trees. 18. 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 United States. Forest Service. [Washington, D. C. ?] : USDA, Forest Ser
. Research for tomorrow's forests : 1983 research accomplishments. --. Forests and forestry Research United States. NEOCHEK-S BIOLOGICAL INSECTICIDE FOR THE EUROPEAN PINE SAWFLY, NEODIPRION SERTIFER. Newly registered Neochek-S equals trouble for the European pine sawfly, but good news for forest trees. 18. 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 United States. Forest Service. [Washington, D. C. ?] : USDA, Forest Service
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