http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Supersedes U.S. Dept. of Agriculture. Circular number 489, Selection, installation, finish and maintenance of wood floors for dwelling, by R.K. Helphenstine.
Washington, D.C. : U.S. Dept. of Agriculture, Forest Service, 1961
Agriculture handbook (United States. Department of Agriculture) ; no. 204