Alm, A.A.2010-02-222010-02-221972-04-15Alm, A.A., (1972), "Jack Pine Tubeling Trials in Minnesota Under Four Site Preparation Treatments", Minnesota Forestry Research Notes 236, School of Forestry, University of Minnesota0544-3555https://hdl.handle.net/11299/58283Published as Scientific Journal Paper Series No. 7978 of the Minnesota Agricultural Experiment Station.en-USforests and forestryMinnesotaresearchReport