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File:Glacial lakes.jpg

Summary

http://www.emporia.edu/earthsci/student/damery1/gl_form.html#Pre-Wisconsin_Drainage

Licensing

Public domain This image or file is a work of a U.S. Army Corps of Engineers soldier or employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain.

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