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  1. 1
    by Gibbs, Ronald S., 1943-
    Published 1981
    Book
  2. 2
    Published 1999
    Book
  3. 3
    Published 1980
    Conference Proceeding Book
  4. 4
  5. 5
    Journal
  6. 6
    Published 2009
    Get full text
    Government Document Book
  7. 7
    Published 2007
    Book
  8. 8
    Published 2006
    Book