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Last edited by ImportBot
September 21, 2008 | History
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Torolf R. Torgersen

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6 works Add another?

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  • Cover of: Save our birds, save our forests

    First published in 1995 — 3 editions
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  • Cover of: Douglas-fir tussock moth handbook: predation and parasitization of Douglas-fir tussock moth egg masses

    First published in 1979 — 3 editions
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  • Cover of: Parasite records for the Douglas-fir tussock moth

    First published in 1981 — 2 editions
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  • Cover of: The occurrence of the hemlock looper (Lambdina fiscellaria (Guenee)) (Lepidoptera: Geometridae) in southeast Alaska, with notes on its biology

    1 edition
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  • Cover of: Identification of parasites of the Douglas-fir tussock moth, based on adults, cocoons, and puparia

    First published in 1977 — 1 edition
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  • Cover of: occurrence of the hemlock looper (Lambdina fiscellaria (Guenée)) (Lepidoptera: Geometriadae) in southeast Alaska, with notes on its biology

    First published in 1967 — 1 edition
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We need a photo of Torolf R. Torgersen

Subjects

Douglas-fir tussock moth, Control, Diseases and pests, Beneficial birds, Douglas fir, Fir, Forest protection, Hemlock looper, Identification, Insect pests, Parasites, Parasitic insects, Sitka spruce

Places

Alaska, Pacific Northwest, United States, West (U.S.)

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ID Numbers

  • OLID: OL4928129A

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History

Download catalog record: RDF / JSON
September 21, 2008 Created by ImportBot Imported from Oregon Libraries MARC record