Collar rot of apple trees
By: by J.R. Magness.
Series: Bulletin / State College of Washington. Agricultural Experiment Station -- no. 236.; Bulletin (State College of Washington. Agricultural Experiment Station) -- no. 236.
Publisher: State College of Washington, Agricultural Experiment Station
Published: 1929
Place of publication: Pullman, Wash
Language: eng
Number of pages: 19
Subjects: Apples -- Diseases and pests; Root rots
Notes: Cover title.

Bibliography: p. 19.