1. Walster Hall 106 North Dakota State University FargoND58108
2. 243 Agricultural Engineering Building University of Missouri ColumbiaMO65211
3. Holland Scientific 6001 S. 58th Street, Suite DLincolnNE68516
4. USDA‐ARS, retired LincolnNE
5. 4017 Woods Blvd.LincolnNE68502
6. 044 N. Agricultural Hall Oklahoma State University StillwaterOK74078