Did you mean: Crabbe, E. C. W.
  1. E. M. Barth & E. C. W. Krabbe (1992). Logic and Political Culture. Monograph Collection (Matt - Pseudo).
     
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  2. D. van Dalen, H. Mulder, E. C. W. Krabbe & A. Visser (1986). Finite Kripke Models of ${\Rm HA}$ Are Locally ${\Rm PA}$. Notre Dame Journal of Formal Logic 27 (4):528-532.
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