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  1. Flora of Nebraska; a list of the conifers and flowering plants of the state with keys for their determination.
    By: Petersen, Niels Frederick,
    Edition: 2d ed.
    Publication info: Plainview, Neb.[c1912]
    Contributed by: Cornell University Library
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  2. Flora of Nebraska; a list of the conifers and flowering plants of the state, with keys for their determination.
    By: Petersen, Niels Frederick,
    Publication info: Lincoln, Neb.,Printed by State Printing Co.,1912
    Contributed by: Mertz Library, The New York Botanical Garden
    BHL Collections: New York Botanical Garden
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  3. Flora of Nebraska; a list of the ferns, conifers and flowering plants of the state with keys for their determination.
    By: Petersen, Niels Frederick,
    Edition: 3rd ed.
    Publication info: Plainview, Neb.,1923
    Contributed by: Mertz Library, The New York Botanical Garden
    BHL Collections: New York Botanical Garden
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