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Gottlob Frege - Stanford Encyclopedia of Philosophy
Gottlob Frege - Wikipedia
Frege, Gottlob | Internet Encyclopedia of Philosophy
Frege’s Logic - Stanford Encyclopedia of Philosophy
Gottlob Frege | German Logician, Mathematician & Philosopher
Philosophy of language - Frege's Revolution, Semantics, …
Gottlob Frege summary | Britannica
Frege, Gottlob: Language | Internet Encyclopedia of Philosophy
Gottlob Frege (1848 - 1925) - Biography - MacTutor History of ...
Gottlob Frege - Stanford Encyclopedia of Philosophy