http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
pages 1217-1256 : maps (1 folded color) ; 23 cm.
The Cushing Library/Chapman Texas Collection copy is part of the Floyd & Louise Chapman Texas & Borderlands Collection.
Issued by U.S. Department of Agriculture, Bureau of Soils, in cooperation with the Texas Agricultural Experiment Station.
"Advance sheets--Field operations of the Bureau of Soils, 1922."