http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
How do we determine when the beaches are safe for swimming?
Ronald J. Veley, Donna S. Francy, and Robert A. Darner.
Title from title screen (viewed on Sept. 15, 2004).
Mode of access: Internet from the USGS Web site. Address as of 09/15/04: http://oh.water.usgs.gov/reports/fs-112-98.html; current access is available via PURL.
Fact sheet (Geological Survey (U.S.)) ; FS-98-112