Title from title screen (viewed on Sept. 11, 2008).
"Oakland County, Michigan."
"Center for Applied Environmental Research University of Michigan-Flint."
"February 1999."
Mode of access: Internet from the USGS web site. Address as of 9/11/08: http://mi.water.usgs.gov/pdf/fs14598v7a.pdf; current access available via PURL.