Thorud, D.B and Frissell, S.S., Jr., (1969), "Soil Rejuvenation Following Artificial Compaction in a Minnesota Oak Stand", Minnesota Forestry Research Notes 208, School of Forestry, University of Minnesota
Minnesota Forestry Research Notes
Published as Scientific Journal Paper Series No. 7078 of the Minnesota Agricultural Experiment Station.
Thorud, David B.; Frissell, Sidney S. Jr..
Soil Rejuvenation Following Artificial Compaction in a Minnesota Oak Stand.
St. Paul, Minn. : School of Forestry, University of Minnesota.
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