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@Book{OL4749447M,
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    year: {1979},
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@Book{OL4548875M,
    title: {God, freedom, and evil},
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    publisher: {Eerdmans},
    year: {1977},
    place: {Grand Rapids},
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@Book{OL680386M,
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    year: {1997},
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}

@Book{OL14411610M,
    title: {The natural approach},
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    year: {1983},
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}

@Book{OL5443832M,
    title: {The knower and the known},
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    year: {1974},
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}

@Book{OL6410581M,
    title: {The Stoic and Epicurean philosophers},
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@Book{OL24368581M,
    title: {The portable Nietzsche},
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@Work{OL8088746W,
    title: {Pelham},
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}

@Work{OL42346W,
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}

@Work{OL16067282W,
    title: {The stoic philosophy},
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    first_publish_year: {1921}
}

@Work{OL2321834W,
    title: {Self-help},
    author: {Samuel Smiles},
    first_publish_year: {1800}
}

@Author{OL310603A,
    name: {Samuel Smiles},
    birth_date: {1812}
    , death_date: {1904}
}