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  1. 1
  2. 2
    Published 1981
    Book
  3. 3
  4. 4
    Published 1981
    Journal
  5. 5
    Journal
  6. 6
    Journal
  7. 7
    Published 1953
    Book
  8. 8
    Journal
  9. 9
    Published 1977
    Book
  10. 10
    Published 1986
    Book
  11. 11
    Published 1986
    Conference Proceeding Book
  12. 12
  13. 13
    Journal
  14. 14
    Published 1914
    Journal
  15. 15
    Published 1908
    Journal
  16. 16
  17. 17
  18. 18
    Published 1984
    Book
  19. 19
    Published 1971
    Book
  20. 20
    Book
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