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Last edited by ImportBot
August 29, 2008 | History
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Roger B. Ryan

We need a photo of Roger B. Ryan

7 works Add another?

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  • Cover of: Recent (1977-1980) releases of imported larch casebearer parasites for biological control

    First published in 1981 — 3 editions
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  • Cover of: Initial releases of Chrysocharis laricinellae and Dicladocerus westwoodii for biological control of the larch casebearer in the Western United States

    First published in 1973 — 2 editions
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  • Cover of: Illustrated key to introduced and common native parasites of larch casebearer

    First published in 1979 — 1 edition
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  • Cover of: Attainment of the overwintering instar and the casebearing habit by larch casebearer larvae at different elevations in the Blue Mountains

    First published in 1974 — 1 edition
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  • Cover of: biological and developmental study of Coeloides brunneri Vier.: a parasite of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopk.

    First published in 1961 — 1 edition
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  • Cover of: Laboratory reactivation of diapausing larch casebearer larvae following different lengths of winter exposure

    First published in 1974 — 1 edition
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  • Cover of: Some environmental factors affecting development and emergence of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins (Coleoptera: Scolytidae), in the laboratory

    First published in 1959 — 1 edition
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We need a photo of Roger B. Ryan

Subjects

Larch casebearer, Biological control, Diseases and pests, Douglas fir beetle, Larvae, Control, Dormancy, Forest insects, Forests and forestry, Insects, Larches, Parasites

Places

United States, Washington (State), West (U.S.)

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ID Numbers

  • OLID: OL4300604A

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History

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August 29, 2008 Created by ImportBot Imported from Western Washington University MARC record