re-study of apple powdery mildew in eastern Washington
By: Roderick Sprague.
Series: Bulletin / State College of Washington. Agricultural Experiment Station -- no. 560.; Bulletin (State College of Washington. Agricultural Experiment Station) -- no. 560.
Publisher: State College of Washington, Agricultural Experiment Station
Published: 1955
Place of publication: Pullman, Wash
Language: eng
Number of pages: 36
Subjects: Apple powdery mildew; Apples -- Diseases and pests -- Washington (State)
Notes: Cover title.

Bibliography: p. 35-36.