Eradication of the cultivated black currant in white pine regions
By: [by J.F. Martin]
Series: Leaflet / United States. Dept. of Agriculture -- no. 175; Leaflet (United States. Dept. of Agriculture) -- no. 175.
Publisher: U.S. Dept. of Agriculture
Published: 1939
Place of publication: Washington, D.C
Language: eng
Subjects: White pine; Diseases and pests; Blister rust; Control; European black currant
Notes: Cover title.

"Issued February 1939"--P. 2.