00293nam a2200121Ia 4500082001700000100002200017245005400039260002800093300002200121490001800143500000500161700000500166  a516bT693.PG  aTorretti, Roberto  aPhilosophy of geometry from Riemann to Poincareb  aBostonbD. Reidelc1978  axiii, 459p. Index  aEpisteme, v.7  a  a