Neetzel, J.R. and Christopherson, C.H., (1964), "Power Driving Blunt vs. Pointed Wood Posts", Minnesota Forestry Notes 150, School of Forestry, University of Minnesota
Minnesota Forestry Notes
Published as Scientific Journal Paper Series No. 5467 of the Minnesota Agricultural Experiment Station.
Neetzel, J.R.; Christopherson, C.H..
Power Driving Blunt vs. Pointed Wood Posts.
St. Paul, Minn. : School of Forestry, University of Minnesota.
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