Columbia subject headings:
Forest ecology--Great Lakes Region (North America)
Forests and forestry--Great Lakes Region (North America)
Nature--Effect of human beings on--Great Lakes Region (North America)
Harvard subject headings:
Forest ecology--Great Lakes Region.
Forests and forestry--Great Lakes Region.
Nature--Effect of human beings on--Great Lakes Region.
Princeton subject headings:
Forest ecology--Great Lakes Region.
Forests and forestry--Great Lakes Region.
Nature--Effect of human beings on--Great Lakes Region.