Kock, Pieter de Bruyn2016-02-192016-02-19195419542016-02-01http://hdl.handle.net/11660/2345Abstract not availableafKnowledge, Theory ofHepp, V. -- (Valentine), -- 1879-1950Dissertation (M.A. (Philosophy))--University of the Free State, 1954DissertationUniversity of the Free State