James D. Summers

Frequency analysis of tillage tool forces

Michael F. Kocher, James D. Summers, John B. Solie, 1985 .

An Economical, On-Board Digital Monitor for Tractor-Operation Variables

James D. Summers, James C. Frisby, 1980 .

Energy-Related Data for Selected Implements

James D. Summers, James C. Frisby, 1979 .