1. 1
    by Sperry, Armstrong, 1897-1976
    Published 1944
    Book
  2. 2
  3. 3
    by Sperry, Armstrong, 1897-1976
    Published 1953
    Book
  4. 4
  5. 5
    by Sperry, Armstrong, 1897-1976
    Published 1961
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    Electronic eBook
  6. 6
  7. 7
    by Sperry, Armstrong, 1897-1976
    Published 1940
    Other Authors: “…Sperry, Armstrong, 1897-1976…”
    Book
  8. 8
  9. 9
    by Sperry, Armstrong, 1897-1976
    Published 1947
    Book
  10. 10
    by Sperry, Armstrong, 1897-1976
    Published 1939
    Book
  11. 11
    by Sperry, Armstrong, 1897-1976
    Published 1961
    Book
  12. 12
    Published 1947
    Other Authors: “…Sperry, Armstrong, 1897-1976…”
    Book
  13. 13
    Other Authors: “…Sperry, Armstrong, 1897-1976…”
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    Electronic eBook
  14. 14
    Other Authors: “…Sperry, Armstrong, 1897-1976…”
    Book
  15. 15
    by Hewes, Agnes Danforth
    Published 1936
    Other Authors: “…Sperry, Armstrong, 1897-1976…”
    Book
  16. 16
    by Lloyd, Trevor, 1906-1995
    Published 1945
    Other Authors: “…Sperry, Armstrong, 1897-1976…”
    Book
  17. 17
    by Bowman, James Cloyd, 1880-1961
    Published 1941
    Other Authors: “…Sperry, Armstrong, 1897-1976…”
    Book
  18. 18
    by Lloyd, Trevor, 1906-1995
    Published 1945
    Other Authors: “…Sperry, Armstrong, 1897-1976…”
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  19. 19
    Other Authors: “…Sperry, Armstrong, 1897-1976…”
    Book
  20. 20
    Other Authors: “…Sperry, Armstrong, 1897-1976…”
    Book