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61
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62
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63
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64
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65by Marsh, George P. (George Perkins), 1801-1882Subjects “...Nature Effect of human beings on....”
Published 1965
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66
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67
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68
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69
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70Published 1970Subjects “...Nature Effect of human beings on....”
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71
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72
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73Published 1992SubjectsBook
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74
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75by Cronon, WilliamSubjects “...Nature Effect of human beings on New England History....”
Published 1983
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76Published 1990Subjects “...Nature Effect of human beings on Moral and ethical aspects....”
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78
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79
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80