Zinc deficiency of field and vegetable crops in the West
By: [by Frank G. Viets]
Series: Leaflet / United States. Dept. of Agriculture -- no. 495; Leaflet (United States. Dept. of Agriculture) -- no. 495.
Publisher: U.S. Department of Agriculture
Published: 1961
Place of publication: Washington, D.C
Language: eng
Subjects: Plants; Nutrition; Zinc in agriculture; Effect of zinc on
Notes: Cover title.

"Issued November, 1961"--P. 8.