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  1. 1
    by Wang, Yan
    Published 1997
    Thesis Book
  2. 2
    Thesis Book
  3. 3
    by Wang, Yan
    Published 1998
    Thesis Book
  4. 4
    by Wang, Yan
    Published 2000
    Thesis Book
  5. 5
    by Wang, Yan
    Published 2003
    Thesis Book