Some lessons in metaphysics. Book 1970 Some lessons in metaphysics. JG José Ortega y Gasset 4.01 4 readers shelved it PublisherNortonLanguageEnglishPublished1970 Addresses, essays, lecturesMetaphysics
idea of principle in Leibnitz and the evolution of deductive theory. idea of principle in Leibnitz and the evolution of deductive theory. 1 readers 1971