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Principia Mathematica - Volume One
Principia mathematica
Principia Mathematica to *56 (Cambridge Mathematical Library)
Principia Mathematica - Volume Two
Principia Mathematica 3 Volume Set
Principia Mathematica
Philosophiae Naturalis Principia Mathematica (1822)
Philosophiæ naturalis principia mathematica
Philosophiae Naturalis Principia Mathematica
On Formally Undecidable Propositions of Principia Mathematica and Related Systems
