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1Published 1979Subjects: “...Poplar United States....”
Government Document Book -
2Published 1992Subjects: “...Borers (Insects) United States....”
Government Document Book -
3by Holsten, Edward H.Subjects: “...Spruce bark beetles United States....”
Published 1991
Government Document Book -
4Published 1984Subjects: “...Pests Control United States Directories....”
Government Document Book -
5