Soil conservation
By: By W.J. Spillman ...
Series: United States. Dept. of Agriculture. Farmers' bulletin -- no. 406; Farmers' bulletin (United States. Department of Agriculture) -- no. 406
Publisher: Govt. Print. Off.
Published: 1915
Place of publication: Washington
Language: eng
Number of pages: 15
Notes: "Issued June 10, 1910; reprinted without change, March, 1915."