Irving, F.D.Beer, J.R.Hall, O.F.2010-01-222010-01-221956-10-15Irving, F.D., Beer, J.R. and Hall, O.F., (1956), "Sugar Maple Bark Injury by Gray Squirrels in a Minnesota Woodlot", Minnesota Forestry Notes 54, School of Forestry, University of Minnesota0099-4332https://hdl.handle.net/11299/56675Published as Scientific Journal Paper Series No. 3690 of the Minnesota Agricultural Experiment Station.en-USforests and forestryMinnesotaresearchReport