Geographic distribution of North American cereals
By: C.S. Plumb
Contributors: United States. Division of Biological Survey; Purdue University. Agricultural Experiment Station
Series: Circular / U.S. Department of Agriculture, Biological Survey -- no. 21; Circular (United States. Bureau of Biological Survey) -- no. 21.
Published: 1897
Language: eng
Subjects: Correspondence; Grain; Varieties
Notes: "Purdue University, Lafayette, Ind., January 4, 1897."