Downy mildew of tobacco
By: by E.E. Clayton and John G. Gaines
Contributors: Gaines, John G. (John Gordon), 1900-
Series: Circular / United States Department of Agriculture -- no. 263; Circular (United States. Dept. of Agriculture) -- no. 263.
Publisher: U.S. Dept. of Agriculture
Published: 1933
Place of publication: Washington, D.C
Language: eng
Subjects: Tobacco; Diseases and pests; Tobacco blue mold
Notes: Caption title.

"Contribution from Bureau of Plant Industry."