Author Details for "Von Trebra, R.L."
| Title | Author(s) | Publication | Year | Online Access |
|---|---|---|---|---|
| Soil survey of Labette County, Kansas | Knobel, E.W.; Von Trebra, R.L.; and Higbee, H.W. | U.S. Department of Agriculture, Bureau of Chemistry and Soils series 1926, no. 30, 23 pages | 1931 | N/A |