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61Published 2007Subjects: “...Agricultural pollution....”
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62by Soenksen, P. J.Subjects: “...Agricultural pollution Iowa Story County....”
Published 1996
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63Published 1986Subjects: “...Agricultural pollution Congresses....”
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65
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66by Crowder, Bradley M.Subjects: “...Agricultural pollution Pennsylvania Mathematical models....”
Published 1985
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67by Wilkison, Donald H.Subjects: “...Agricultural pollution Missouri....”
Published 1994
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69Published 2003Subjects: “...Agricultural pollution Government policy United States....”
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70Published 2008Subjects: “...Agricultural pollution Delaware....”
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71Published 2009Subjects: “...Agricultural pollution....”
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72Published 2005Subjects: “...Agricultural pollution....”
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73Published 2005Subjects: “...Agricultural pollution....”
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74Published 2005Subjects: “...Agricultural pollution....”
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75Published 2005Subjects: “...Agricultural pollution....”
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76Published 2005Subjects: “...Agricultural pollution....”
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77Published 2004Subjects: “...Agricultural pollution....”
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78Published 2004Subjects: “...Agricultural pollution....”
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79Published 2004Subjects: “...Agricultural pollution....”
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80Published 2005Subjects: “...Agricultural pollution....”
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