01027cam a22002771 4500 agr68000061 DLC 20260227111028.0 710901s1967 dcua b 000 0 eng c agr68000061 U.S. Nat'l Agr. Libr. DLC DLC S591 .G55 1Ag84Ah no. 316 631.5/1 Gill, William R. Soil dynamics in tillage and traction, by William R. Gill and Glen E. Vanden Berg. [Washington] Agricultural Research Service, U.S. Dept. of Agriculture; [for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1967] viii, 511 p. illus. 24 cm. United States. Dept. of Agriculture. Agriculture handbook ; no. 316 Bibliography: p. 460-487. Soil dynamics. Tillage. Farm tractors. Vanden Berg, Glen E., joint author. Agriculture handbook (United States. Department of Agriculture) ; no. 316. 12375 12375