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21
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22
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23Published 1973Subjects “...Paleoecology United States....”
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24Published 1994SubjectsBook
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25
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26
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27
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28
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29
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30
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31
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32
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33
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34
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35
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36Published 2002Subjects “...Paleoecology Quaternary....”
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37Published 1976SubjectsBook
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38Published 1982Subjects “...Paleoecology Bering Land Bridge Congresses....”
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39
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40Published 1967SubjectsBook