Root diseases in Oregon and Washington conifers
By: James S. Hadfield ... [et al.].
Contributors: Hadfield, James S.
Publisher: USDA Forest Service, Pacific Northwest Region
Published: 1986
Place of publication: Portland, Or
Language: eng
Number of pages: 27
Subjects: Roots (Botany) -- Diseases and pests.; Conifers -- Oregon.; Conifers -- Washington (State)
Notes: Caption title.

Includes bibliographies.