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21Article
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22by Vasquez, John A. 1945-
Published 1998Book -
23Article
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24
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25by Earle, Timothy K.
Published 1997Book -
26
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27
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28
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29by Lieber, Robert J., 1941-
Published 1995Book -
30by Bueno de Mesquita, Bruce 1946-
Published 1992Book