00614nam a2200193 a 4500008004100000020002200041100002900063245008400092250001200176260005200188300002700240440003600267650002900303650003800332700002300370003000100393005001700394040000900411                                          a052109187X (pbk.)1 aWhitehead, Alfred North.10aPrincipia mathematica to *56 /cby Alfred North Whitehead and Bertrand Russell.  a2nd ed.  aCambridge :bCambridge University Press,c1927.  axlvi, 410 p. ;c22 cm. 0aCambridge mathematical library. 0aMathematicsxPhilosophy. 0aLogic, Symbolic and mathematical.1 aRussell, Bertrand.20230123133414.0  cNUST