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    Journal
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    Journal
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    Journal
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    Published 1985
    Journal
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    Journal
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    Journal
  8. 8
    Published 1973
    Journal
  9. 9
    Journal
  10. 10
    Published 1978
    Journal
  11. 11
    Published 1990
    Journal
  12. 12
    Journal
  13. 13
    Published 1996
    Journal
  14. 14
    Published 1998
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    Government Document Journal
  15. 15
    Published 1965
    Journal
  16. 16
    Published 1999
    Journal
  17. 17
    Published 1996
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    Government Document Journal
  18. 18
    Published 2002
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  19. 19
    Published 2002
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  20. 20
    Published 2001
    Journal
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