The Geological and Natural History Survey of Minnesota. The twenty-third annual report for the year 1894.

Winchell, N.H.2010-01-072010-01-071895https://hdl.handle.net/11299/56271Summary of the geological and natural history studies carried out in Minnesota during 1894.engeologynatural historyMinnesotalandformsThe Geological and Natural History Survey of Minnesota. The twenty-third annual report for the year 1894.Map