D. Shipman
Krischik, V.A., D. Shipman, and R. Stuckey. 1992. “How Grain Moves Through The Market System”. In V. A. Krischik, G. Cuperus, D. Galliart, And M. Stone-Cooper (Eds.). Management Of Grain, Bulk Commodities, And Bagged Products, 21-28. Oklahoma State University.