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  2. 2
  3. 3
    by Wilhelm, Pia
    published 1975
    Book
  4. 4
    published 1982
    Book Conference Proceedings
  5. 5
    published 1989
    Book
  6. 6
    by Jendritzki, Hans
    published 1982
    Book
  7. 7
  8. 8
  9. 9
    by Wallenta, Wolfgang
    published 2017
    Book
  10. 10
    published 1992
    Book
  11. 11
  12. 12
    published 2001
    Book
  13. 13
    by Fritz, Rolf
    published 1950
    Book Special Print
  14. 14
    published 1985
    Book
  15. 15
    by Smith, Eric
    published 1983
    Book
  16. 16
  17. 17
    published 1974
    Book
  18. 18
    published 1997
    Book
  19. 19
    published 2007
    Book
  20. 20