http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Management and inventory of southern hardwoods
by John A. Putnam, George M. Furnival, and J.S. McKnight.
Includes bibliographical references (pages 94-99).
Washington, D.C. : U.S. Dept. of Agriculture, Forest Service, 1960
Agriculture handbook (United States. Department of Agriculture) ; no. 181