http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
98 pages : illustrations, maps (some color) ; 46 cm.
prepared under the editorship of O.E. Baker by C.F. Marbut.
At head of title: U.S. Dept. of Agriculture. Bureau of Chemistry and Soils.