Swiss needle cast of Douglas-fir Christmas trees
Subtitle: impact in the Pacific Northwest and factors influencing inoculum availability
By: by Ellen Marie Michaels.
Published: 1983
Language: eng
Number of pages: 51
Subjects: Douglas fir -- Diseases and pests.
Notes: Typescript.

Thesis (M.S.)--Washington State University, 1983.

Includes bibliographies.

WSU:"Department of Plant Pathology."