The Geological and Natural History Survey of Minnesota. The nineteenth annual report for the year 1890.

Winchell, N.H.2010-01-072010-01-071892https://hdl.handle.net/11299/56262Summary of the geological and natural history studies carried out in Minnesota during 1890.engeologynatural historyMinnesotalandformsThe Geological and Natural History Survey of Minnesota. The nineteenth annual report for the year 1890.Map