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By Dwight Lingenfelter, William S. Curran, Ph.D.
By Robert Crassweller, Ph.D., Grzegorz (Greg) Krawczyk, Ph.D., James Travis, Ph.D., Frederick E. Gildow, Jr., Ph.D.
By Charles White, Mary Barbercheck, Ph.D., William S. Curran, Ph.D.