Agarwal, Sanjeev; Clemens, Roxanne L.; Hadwiger, Donald F.; Hayes, Dermot J.; Hong, Seon H.; Johnson, Severin; Keith, Pat M.; Khan, Linda; Kihl, Young W.; Lee, Cong-Bum; Lee, Yong S.; Seim, Emerson L.; Westendorf, Julie P

Midwest Agribusiness Trade Research and Information Center, Iowa State University, Des Moines, Iowa, and Ames, Iowa, (1991)