Elm bark beetles
By: [by T.H. Jones]
Series: United States. Dept. of Agriculture. Leaflet -- no. 185; Leaflet (United States. Dept. of Agriculture) -- no. 185.
Publisher: U.S. Dept. of Agriculture
Published: 1939
Place of publication: Washington, D.C
Language: eng
Subjects: Bark beetles
Notes: Cover title.

"Issued August, 1939"--P. 2.