Dhir, 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 Minnesota
Minnesota Forestry Research Notes
Published as Scientific Journal Paper Series No. 1549 of the Minnesota Agricultural Experiment Station.
Work is a part of NC-99 "Forest Tree Improvement Through Selection and
Breeding" and is supported in part by Regional Research Funds from the U.S.
Dept. of Agriculture.
Dhir, N.K.; Mohn, C.A..
Growth and Flowering of NC-99 Cottonwood Seed Sources in Minnesota.
St. Paul, Minn. : School of Forestry, University of Minnesota.
Retrieved from the University of Minnesota Digital Conservancy,
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