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  1.  27
    More on "Grue" and Grue.J. S. Ullian - 1961 - Philosophical Review 70 (3):386-389.
  2.  23
    More About `About'.Hilary Putnam & J. S. Ullian - 1965 - Journal of Philosophy 62 (12):305-310.
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  3.  16
    Corollary to Goodman's Explication of 'About'.J. S. Ullian - 1962 - Mind 71 (284):545.
  4.  6
    Splinters of Recursive Functions.J. S. Ullian - 1960 - Journal of Symbolic Logic 25 (1):33-38.
  5. The Web of Belief.Willard Orman Quinvane & J. S. Ullian - 1982 - Random House.
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