Landon, R.H.2016-04-262016-04-261922-06https://hdl.handle.net/11299/179717University of Minnesota Masters thesis. June 1922. Major: Geology. Advisor: Dr. W. S. Cooper. 1 computer file (PDF); 20 pages.enGeologyVegetational Development on the Rock cliffs of the Minneappolis RegionThesis or Dissertation