Possible worlds semantics: A research program that cannot fail? Johan van Benthem OriginalPaper Pages: 379 - 393
DFC-algorithms for Suszko logic and one-to-one Gentzen type formalizations Anita Wasilewska OriginalPaper Pages: 395 - 404
On the degree of complexity of sentential logics.II. An example of the logic with semi-negation Jacek HawranekJan Zygmunt OriginalPaper Pages: 405 - 413
Roman Suszko (1919–1979): A bibliography of the published work with an outline of his logical investigations Mieczysjław OmyłaJan Zygmunt Announcement Pages: 421 - 441