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  • Planting depth of hybrid Poplar cuttings influences number of shoots / Edward Hansen, David Tolsted, and Matthew Tower.

    • Text
    • [Grand Rapids, MN.] : U.S. Dept. of Agriculture, Forest Service, North Central Forest Experimental Station, 1991.
    • 1991

  • A guide for determining when to fertilize hybrid poplar plantations [microform] / Edward A. Hansen.

    • Text
    • St. Paul, Minn. (1992 Folwell Ave., St. Paul 55108) : U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station, 1994.
    • 1994

  • Guidelines for establishing poplar plantations in the North-Central U.S. [microform] / Edward A. Hansen, Daniel A. Netzer, and David N. Tolsted.

    • Text
    • [Saint Paul, Minn.?] : U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station, 1993.
    • 1993

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