identification and quantification of Pyrenochaeta terrestris (Hansen) Gorenz, Walker, and Larson, propagules in soil and onion roots
By: by James Ernest Flota.
Published: 1978
Language: eng
Number of pages: 36
Subjects: Onions -- Diseases and pests.
Notes: Typescript (photocopy).

Thesis (M.S.)--Oregon State University, 1978.

Includes bibliography.