Institution: | 1. Mississippi State University, , Mississippi State, MS, USA;2. North Carolina State University, , Raleigh, NC, USA;3. Iowa State University, , Ames, IA, USA;4. Southern Illinois University, , Carbondale, IL, USA;5. University of Nebraska, , Scotts Bluff, NE, USA;6. Purdue University, , West Lafayette, IN, USA |