Snyder, HarryUniversity of Minnesota. Chemical Division2017-01-302017-01-301893-12Snyder, Harry. Soils: The composition of native and cultivated soils and the effects of continuous cultivation upon their fertility. 1893. Saint Paul, Minn.: University of Minnesota. Agricultural Experiment Station. Bulletin 30, page 161-191https://hdl.handle.net/11299/183771This archival publication may not reflect current scientific knowledge or recommendations. Current information available from University of Minnesota Agricultural Experiment Station: http://www.maes.umn.edu/enNewsletter or Bulletin