http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
4 unnumbered pages : illustrations (some color), color maps ; 28 cm.
Includes bibliographical references (page [4]).
Rio Grande Valley (Colo.-Mexico and Tex.)
Rio Grande Watershed (Colo.-Mexico and Tex.)
Fact sheet (Geological Survey (U.S.)) ; FS-97-034