Jensen, R.A., Schantz-Hansen, T. and Rudolf, P.O., (1960), "A Study of Jack Pine Seed Source in the Lake States", Minnesota Forestry Notes 88, School of Forestry, University of Minnesota
Minnesota Forestry Notes
Published as Scientific Journal Paper Series No. 4363 of the Minnesota Agricultural Experiment Station.
Jensen, Raymond A.; Schantz-Hansen, T.; Rudolf, Paul O..
A Study of Jack Pine Seed Source in the Lake States.
St. Paul, Minn. : School of Forestry, University of Minnesota.
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