Gill, W. R., & Berg, G. E. V. Soil dynamics in tillage and traction. [y.y.]: United states Departmaent of Agriculture.
Chicago Style CitationGill, William R., and Glen E. Vanden Berg. Soil Dynamics in Tillage and Traction. [y.y.]: United states Departmaent of Agriculture.
MLA CitationGill, William R., and Glen E. Vanden Berg. Soil Dynamics in Tillage and Traction. [y.y.]: United states Departmaent of Agriculture.
Warning: These citations may not always be 100% accurate.