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By: Torgersen, Torolf R. - Pacific Northwest Forest and Range Experiment Station (Portland, Or.) - United States. Forest Service.Edition:Publication info: Portland, Or, Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, Forest Service, 1977Volume: no.215Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects:BHL Collections:
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By: Torgersen, Torolf R. - Torgersen, Anna S. - United States. Forest Service. Pacific Northwest Region. - Pacific Northwest Research Station (Portland, Or.)Edition:Publication info: Portland, OR, U.S. Dept. of Agriculture, Forest Serivce, Pacific Northwest Region, [1995]Volume: 1995Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects:BHL Collections:
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By: Halaj, Juraj - Ross, D W - Mason, R R - Torgersen, Torolf R. - Moldenke, A RType: ArticleIn: The Pan-Pacific entomologistVolume: 72Series:Issue: 1Date: 1996Page Range: 17--26Publication Info: San Francisco Pacific Coast Entomological SocietySubjects:
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By: Furniss, Malcolm M. - Johnson, James B. (James Blakeslee), - Westcott, Richard L. - Torgersen, Torolf R.Type: ArticleIn: The Great Basin naturalistVolume: 52Series:Issue: 4Date: 1992Page Range: 373--377Publication Info: Provo, Utah, M.L. Bean Life Science Museum, Brigham Young University,Subjects:
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By: Torgersen, Torolf R.Type: ArticleIn: The Pan-Pacific entomologistVolume: 49Series:Issue: 2Date: 1973Page Range: 124--126Publication Info: San Francisco Pacific Coast Entomological SocietySubjects:
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By: Torgersen, Torolf R.Type: ArticleIn: The Pan-Pacific entomologistVolume: 47Series:Issue:Date: 1971Page Range: 215--219Publication Info: San Francisco Pacific Coast Entomological SocietySubjects:
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By: Wickman, Boyd E. - Torgersen, Torolf R.Type: ArticleIn: The Pan-Pacific entomologistVolume: 63Series:Issue: 3Date: 1987Page Range: 218--223Publication Info: San Francisco Pacific Coast Entomological SocietySubjects: