books.google.fr - The present volume of the Handbook of the History of Logic brings together two of the most important developments in 20th century non-classical logic. These are many-valuedness and non-monotonicity. On the one approach, in deference to vagueness, temporal or quantum indeterminacy or reference-failure,...https://books.google.fr/books/about/The_Many_Valued_and_Nonmonotonic_Turn_in.html?hl=fr&id=3TNj1ZkP3qEC&utm_source=gb-gplus-shareThe Many Valued and Nonmonotonic Turn in Logic