- Publication venue
- Washington, D.C. :U.S. Dept. of Agriculture,1916.
- Publication date
- 01/01/1916
- Field of study
no.409 (1916
- Publication venue
- Washington, D.C. :U.S. Dept. of Agriculture,1916.
- Publication date
- 01/01/1916
- Field of study
no.384 (1916
- Publication venue
- Washington, D.C. :U.S. Dept. of Agriculture,1920.
- Publication date
- 01/01/1920
- Field of study
no.825 (1920