John, T.J., Alm, A.A. and Peterson, L.C., (1977), "Book Planter Containerized Seedling Trials in Minnesota", Minnesota Forestry Research Notes 266, School of Forestry, University of Minnesota
Minnesota Forestry Research Notes
Published as Miscellaneous Journal Paper Series No. 1665 of the Minnesota Agricultural Experiment Station.
John, T.J.; Alm, A.A.; Peterson, L.C..
Book Planter Containerized Seedling Trials in Minnesota.
St. Paul, Minn. : School of Forestry, University of Minnesota.
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