Use of the exponential yield curve in fertilizer experiments
By: by W.J. Spillman.
Contributors: United States. Dept. of Agriculture.
Series: Technical bulletin / United States Department of Agriculture -- no. 348; Technical bulletin (United States. Dept. of Agriculture) -- no. 348.
Publisher: U.S. Dept. of Agriculture
Published: 1933
Place of publication: Washington
Language: eng
Number of pages: 66
Subjects: Fertilizers -- Mathematical models.
Notes: Cover title.

Literature cited: p. 66.