Conceptual Issues in Ecology

Processes, Beliefs, and Questions: Essays on Formal Semantics of Natural Language and Natural Language Processing

Essays on Mathematical and Philosophical Logic: Proceedings of the Fourth Scandinavian Logic Symposium and of the First Soviet-Finnish Logic Conference, Jyväskylä, Finland, June 29–July 6, 1976

Essays in Honour of Jaakko Hintikka: On the Occasion of His Fiftieth Birthday on January 12, 1979