Schoenike, R.E. and Brown, B.A., (1963), "Variation in Bark Thickness of Jack Pine Seed Sources", Minnesota Forestry Notes 130, School of Forestry, University of Minnesota
Minnesota Forestry Notes
Published as Scientific Journal Paper Series No. 5103 of the Minnesota Agricultural Experiment Station.
Schoenike, R.E.; Brown, B.A..
Variation in Bark Thickness of Jack Pine Seed Sources.
St. Paul, Minn. : School of Forestry, University of Minnesota.
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