arnold p yerkes

Arnold P. Yerkes · International harvester co.

11 sayfa · 1946

Nutrition / Soils

Harold Nelson Humphrey, Arnold P. Yerkes · U.S. Dept. of Agriculture

15 sayfa · 1917

Farm equipment

Arnold P. Yerkes, L. M. Church · U.S. Dept. of Agriculture

32 sayfa · 1918

Farm tractors

Arnold P. Yerkes, H. B. McClure, United States. Department of Agriculture. National Agricultural Library. · U.S. Dept. of Agriculture

12 sayfa · 1917

Haying equipment