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21
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22
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23by Mason, Ronald J.Subjects: “...Indians of North America Great Lakes Region (North America) Antiquities....”
Published 1981
Book -
24
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25by Hough, Jack Luin, 1909-Subjects: “...Geology Great Lakes (North America)...”
Published 1958
Book -
26Published 1983Subjects: “...Forests and forestry Great Lakes Region (North America)...”
Book -
27by Kuttruff, Karl, 1941-“...Great Lakes (North America) Navigation History Pictorial works....”
Published 1976
Book -
28by King, B. A.“...Great Lakes Region (North America) Description and travel....”
Published 1977
Book -
29Published 1985“...Great Lakes Region (North America) Economic conditions....”
Book -
30by Ashworth, William, 1942-Subjects: “...Water Pollution Environmental aspects Great Lakes (North America) History....”
Published 1986
Book -
31by Balcer, Mary D.Subjects: “...Freshwater zooplankton Great Lakes (North America)...”
Published 1984
Book -
32
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33
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34
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35by Cantor, George, 1941-“...Great Lakes Region (North America) Description and travel Guidebooks....”
Published 1978
Book -
36Published 1979Subjects: “...Freshwater ecology Great Lakes (North America)...”
Book -
37
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38
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39
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40