The sources of apple bitter-rot infections
By: by John W. Roberts
Series: Bulletin / United States Department of Agriculture -- no. 684; Bulletin of the U.S. Department of Agriculture -- no. 684.
Publisher: U.S. Dept. of Agriculture
Published: 1918
Place of publication: Washington, D.C
Language: eng
Number of pages: 26
Subjects: Apples; Diseases and pests; Bitter-rot
Notes: Caption title.

"August 19, 1918."

"Professional paper."

Bibliography: p. 24-25.