The red ocher culture of the upper Great Lakes and adjacent areas / Robert E. Ritzenthaler, Curator of Anthropology, Milwaukee Public Museum, and George I. Quimby, Curator of North American Archaeology and Ethnology, Chicago Natural History Museum.

v.36:no.11(1962)

Nutrients in Iowa Lakes, 2003

Water fact sheet for Iowa Department of Natural Resources and the Geological Bureau.

Assessment of Iowa Lakes, 2001

Water fact sheet for Iowa Department of Natural Resources and the Geological Bureau.

Cooperative Lakes Area Monitoring Project-Little Spirit Lake, 2007

Water fact sheet for Iowa Department of Natural Resources and the Geological Bureau.

Cooperative Lakes Area Monitoring Project-Project Overview, 2007

Water fact sheet for Iowa Department of Natural Resources and the Geological Bureau.

Cooperative Lakes Area Monitoring Project-Silver Lake, 2007

Water fact sheet for Iowa Department of Natural Resources and the Geological Bureau.

Cooperative Lakes Area Monitoring Project-Center Lake, 2007

Water fact sheet for Iowa Department of Natural Resources and the Geological Bureau.

Cooperative Lakes Area Monitoring Project-West Okoboji Lake, 2007

Water fact sheet for Iowa Department of Natural Resources and the Geological Bureau.

Cooperative Lakes Area Monitoring Project-Lower Gar Lake, 2007

Water fact sheet for Iowa Department of Natural Resources and the Geological Bureau.

Cooperative Lakes Area Monitoring Project-Lake Minnewashta, 2007

Water fact sheet for Iowa Department of Natural Resources and the Geological Bureau.