Meyer, M.P.Eng, R.L.Schladweiler, P.2010-02-222010-02-221972-10-15Meyer, M.P., Eng, R.L. and Schladweiler, P., (1972), "Aerial Photo Measurement of Big Sagebrush (Artemisia tridentata) Crown Density", Minnesota Forestry Research Notes 238, School of Forestry, University of Minnesota0544-3555https://hdl.handle.net/11299/58286Published as Scientific Journal Paper Series No. 8112 of the Minnesota Agricultural Experiment Station.en-USforests and forestryMinnesotaresearchReport