1. 1
    Published 1992
    ...HC 663.5 .S9645...
    Book
  2. 2
    Published 1993
    ...HD 60.5 .N5 .C737...
    Book
  3. 3
    Published 1994
    ...HD 69 .P6 .E607...
    Book
  4. 4
    Published 1992
    ...HC 79 .E5 .U582 1992...
    Conference Proceeding Book
  5. 5
    Published 1999
    ...HD 75.6 .S9173 1999...
    Book