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  1. 1
    published 1976
    Other Authors: '; ...Bachmann, Erich...
    Book
  2. 2
    Get additional information online
    E-Article
  3. 3
  4. 4
  5. 5
    published 1988
    Other Authors: '; ...Bachmann, Erich...
    Book
  6. 6
    published 1964
    Other Authors: '; ...Bachmann, Erich...
    Book