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  1. 1
    Provisional tree seed zones and transfer guidelines for Alaska

    Provisional tree seed zones and transfer guidelines for Alaska by Alden, John Norman

    [Portland Or.] : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1991
    Format: Government Document Book


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  2. 2
    Exploitation of environmental heterogeneity by plants : ecophysiological processes above- and belowground

    Exploitation of environmental heterogeneity by plants : ecophysiological processes above- and belowground

    San Diego : Academic Press, 1994
    Format: Book


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  3. 3
    The conservation of plant biodiversity

    The conservation of plant biodiversity by Frankel, O. H. (Otto Herzberg), 1900-1998

    Cambridge ; New York : Cambridge University Press, 1995
    Format: Book


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