Alm, A.A. and Jensen, R.A., (1969), "Results of Lake States Jack Pine Seed Source Test in East Central Minnesota", Minnesota Forestry Research Notes 200, School of Forestry, University of Minnesota
Minnesota Forestry Research Notes
Published as Scientific Journal Paper Series No. 6771 of the Minnesota Agricultural Experiment Station.
Alm, A.A.; Jensen, Raymond A..
Results of Lake States Jack Pine Seed Source Test in East Central Minnesota.
St. Paul, Minn. : School of Forestry, University of Minnesota.
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