http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Technical guide to managing ground water resources
Watershed, Fish, Wildlife, Air & Rare Plants Staff.
viii, 281 pages : illustrations (some color), maps ; 28 cm.
Also available via Internet from the Forest Service web site. Address as of 7/27/07: http://www.fs.fed.us/biology/resources/pubs/watershed/groundwater/ground%5Fwater%5Ftechnical%5Fguide%5Ffs-881%5Fmarch2007.pdf; current access is available via PURL.