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  1.  16
    Equivalence of some Hierarchies of Primitive Recursive Functions.Keith Harrow - 1979 - Mathematical Logic Quarterly 25 (25‐29):411-418.
  2.  21
    Equivalence of some Hierarchies of Primitive Recursive Functions.Keith Harrow - 1979 - Zeitschrift fur mathematische Logik und Grundlagen der Mathematik 25 (25-29):411-418.
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    Small Grzegorczyk classes and limited minimum.Keith Harrow - 1975 - Mathematical Logic Quarterly 21 (1):417-426.
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