The oat aphis
By: by J.J. Davis
Series: Bulletin of the U.S. Department of Agriculture -- no. 112; Bulletin of the U.S. Department of Agriculture -- no. 112.
Publisher: U.S. Dept. of Agriculture
Published: 1914
Place of publication: Washington, D.C
Language: eng
Number of pages: 16
Subjects: Oats; Oat aphis; Diseases and pests
Notes: Caption title.

"August 21, 1914."