http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Environmental characteristics and water quality of hydrologic benchmark network stations in the eastern United States, 1963-95
xi, 158 pages : illustrations, maps ; 28 cm.
Also available via Internet from the USGS web site. Address as of 7/25/08: http://pubs.usgs.gov/circ/circ1173/circ1173a/1173a.html ; current access available via PURL.
U.S. Geological Survey circular ; 1173-A