The Geological and Natural History Survey of Minnesota. The tenth annual report for the year 1881.

Winchell, N.H.2010-01-062010-01-061882https://hdl.handle.net/11299/56241Summary of the geological and natural history studies carried out in Minnesota during 1881.engeologynatural historyMinnesotalandformsThe Geological and Natural History Survey of Minnesota. The tenth annual report for the year 1881.Map