Soil dynamics in tillage and traction
Gill, William R., Vanden Berg, Glen E.
Soil dynamics in tillage and traction - Washington United States Department of Agriculture 1967 - 511 p.
624.131.5 G 484 S
Soil dynamics in tillage and traction - Washington United States Department of Agriculture 1967 - 511 p.
624.131.5 G 484 S