http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
i, 70 pages : illustrations, maps (part folded color) ; 28 cm.
[by William M. Koos, Lee A. Putnam, and Wayburn D. Mitchell.
The Cushing Library/Chapman Texas Collection copy is part of the Floyd & Louise Chapman Texas & Borderlands Collection.
Prepared in cooperation with the Texas Agricultural Experiment STation.
[U. S. Soil Conservation Service] Soil survey, ser. 1961, no. 36