Objectivity, rationality, and the third realm : justification and the grounds of psychologism : a study of Frege and Popper /
Notturno, Mark Amadeus.
Dordrecht Boston M. Nijhoff
1985
: Revised version of the author's doctoral dissertation
Includes bibliographical references and indexes
Frege, Gottlob, 1848-1925.
Popper, Karl R. (Karl Raimund), 1902-1994.