Correlations between annual precipitation and the yield of spring wheat in the Great Plains
By: by John S. Cole ; United States Department of Agriculture, Bureau of Plant Industry, in cooperation with the Agricultural Experiment Stations of Montana, North Dakota, Wyoming, Nebraska, Colorado, and Kansas.
Contributors: United States. Dept. of Agriculture.
Series: Technical bulletin / United States Department of Agriculture -- no. 636; Technical bulletin (United States. Dept. of Agriculture) -- no. 636.
Publisher: U.S. Dept. of Agriculture
Published: 1938
Place of publication: Washington, D.C
Language: eng
Number of pages: 40
Subjects: Wheat -- Great Plains; Precipitation (Meteorology) -- Great Plains
Notes: Caption title.

"December 1938."

Includes bibliographical references.