Department of Soil Science, University of Minnesota2012-03-072012-03-071981https://hdl.handle.net/11299/121551The 1981 edition of the "Bluebook" is a compilation of data collected and analyzed throughout Minnesota. This archival publication may not reflect current scientific knowledge or recommendations. Current information available from the University of Minnesota Extension: https://www.extension.umn.edu.en-USsoilsReport