Idealismus und positivismus.

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Item Link Original Source
Full view   T.1 Harvard University
Full view   v.1-2 University of Illinois at Urbana-Champaign
Full view   v.1-2 University of Wisconsin - Madison
Full view   v.1-2 University of California
Full view   v.1 1879 University of Michigan
Full view   T.2 Harvard University
Full view   v.2 1882 University of Michigan
Full view   T.3 Harvard University
Full view   v.3 University of Illinois at Urbana-Champaign
Full view   v.3 University of Wisconsin - Madison
Full view   v.3 University of California
Full view   v.3 1884 University of Michigan