http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Computerized stratified random site-selection approaches for design of a ground-water-quality sampling network
1 online resource (vi, 109 pages) : illustrations, maps.
Includes bibliographical references (pages 64-65).
Water-resources investigations report ; 90-4101