Ecological status and trends of the Upper Mississippi River system, 1998
Subtitle: a report of the Long Term Resource Monitoring Program
By: U.S. Geological Survey, Upper Midwest Environmental Sciences Center
Contributors: Upper Midwest Environmental Sciences Center (Geological Survey); Long Term Resource Monitoring Program (Environmental Management Program)
Series: Long Term Resource Monitoring Program technical report -- 99-T 001; Technical report (Long Term Resource Monitoring Program (Environmental Management Program) -- 99-T001
Publisher: U.S. Geological Survey, Upper Midwest Environmental Sciences Center
Published: 1999
Place of publication: La Crosse, WI
Language: eng
Format: Electronic resource
Subjects: Mississippi River
Notes: Title from HTML title screen (viewed Nov. 7, 2006)

"April 1999."

Mode of access: Internet from the USGS web site. Address as of 11/07/06: http://www.umesc.usgs.gov/reports%5Fpublications/status%5Fand%5Ftrends.html ; current access is available via PURL