http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Regional assessment of water quality in the Rio Grande Basin
Texas Natural Resource Conservation Commission
volumes : illustrations (some color), maps (some color) ; 28 cm.
prepared by Border Environmental Assessment Team, Office of Water Resource Management.
Rio Grande Watershed (Colo.-Mexico and Tex.)
Texas Natural Resource Conservation Commission. Watershed Management Division.