Rehm, GeorgeSchmitt, Michael2010-09-212010-09-211993Rehm, G. and Schmitt, M. 1993. Understanding Phosphorus in Minnesota Soils. St. Paul, MN: University of Minnesota Extension Service. FO-0792-D.https://hdl.handle.net/11299/939904 p. Photograph.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-USPhosphorusSoil nutrient balanceMinnesotaLearning Object