Fertilizer placement for potatoes
By: by G. A. Cumings and G. V. C. Houghland.
Contributors: Houghland, G. V. C.; United States. Dept. of Agriculture.
Series: Technical bulletin / United States Department of Agriculture -- no. 669; Technical bulletin (United States. Dept. of Agriculture) -- no. 669.
Publisher: U.S. Dept. of Agriculture
Published: 1939
Place of publication: Washington, D.C
Language: eng
Number of pages: 48
Subjects: Potatoes -- Fertilizers
Notes: Cover title.

"February 1939."

Literature cited: p. 47-48.