Dhir, N.K.Mohn, C.A.2010-02-222010-02-221974-07-15Dhir, N.K, and Mohn, C.A., (1974), "Growth and Flowering of NC-99 Cottonwood Seed Sources in Minnesota", Minnesota Forestry Research Notes 253, School of Forestry, University of Minnesota0544-3555https://hdl.handle.net/11299/58308Published as Scientific Journal Paper Series No. 1549 of the Minnesota Agricultural Experiment Station.en-USforests and forestryMinnesotaresearchReport