Paul D. Hopler

NOISE REDUCTION PROGRAM FOR U.S. ARMY CONSTRUCTION EQUIPMENT

Paul D. Hopler, Samuel E. Wehr, P. D. Hopler, 1974 .

Performance of Army Arctic Engine Oils in Hydraulic and Power Transmission Fluid Systems.

Sidney J. Lestz, Thomas C. Bowen, Paul D. Hopler, 1975 .

Design and Installation of ROPS for Army Retrofit Program

Paul D. Hopler, William O. Stewart, 1973 .