Alm, A.A., (1972), "Jack Pine Tubeling Trials in Minnesota Under Four Site Preparation Treatments", Minnesota Forestry Research Notes 236, School of Forestry, University of Minnesota
Minnesota Forestry Research Notes
Published as Scientific Journal Paper Series No. 7978 of the Minnesota Agricultural Experiment Station.
Jack Pine Tubeling Trials in Minnesota Under Four Site Preparation Treatments.
St. Paul, Minn. : School of Forestry, University of Minnesota.
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