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  1. 1
    Published 1952
    Journal
  2. 2
    Published 1946
    Journal
  3. 3
    Published 1980
    Journal
  4. 4
    Published 1932
    Journal
  5. 5
    Journal
  6. 6
    Published 1972
    Conference Proceeding Journal
  7. 7
    Published 1992
    Journal
  8. 8
    Published 1970
    Journal
  9. 9
    Journal
  10. 10
    Published 1948
    Journal
  11. 11
    Published 1957
    Journal
  12. 12
    Published 1984
    Journal
  13. 13
    Published 1973
    Journal
  14. 14
    Published 1907
    Journal
  15. 15
    Published 1985
    Journal
  16. 16
    Published 1989
    Journal
  17. 17
    Published 1988
    Government Document Journal
  18. 18
    Published 1988
    Journal
  19. 19
    Published 1985
    Journal
  20. 20
    Published 1986
    Journal