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	1.	Stubble-mulch farming to hold soil and water / by F.L. Duley and J.C. Russel. by Duley, F. L. (Frank Leslie), 1888- Russel, J. C. (Jouette Clark), 1889- Series: Farmers' bulletin (United States. Department of Agriculture) ; no. 1997. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Washington, D.C. : U.S. Dept. of Agriculture, 1948 Availability: No items available. Add to cart (remove)
	2.	Total porosity and random roughness of the interrow zone as influenced by tillage [by R. R. Allmaras and others. by Allmaras, R. R Series: United States. Conservation research report ; no. 7. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Washington] Agricultural Research Service, U.S. Dept. of Agriculture [1966] Availability: No items available. Add to cart (remove)
	3.	Soil dynamics in tillage and traction, by William R. Gill and Glen E. Vanden Berg. by Gill, William R Vanden Berg, Glen E [joint author.] Series: Agriculture handbook (United States. Department of Agriculture) ; no. 316. Material type: Text; Format: print ; Literary form: Not fiction Publication details: [Washington] Agricultural Research Service, U.S. Dept. of Agriculture; [for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1967] Availability: No items available. Add to cart (remove)

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