- International Congress of Logic, Methodology and Philosophy of Science (3)
- Nagel, Ernest, 1901- (2)
- Suppes, Patrick, 1922- (2)
- Academia Republicii Socialiste România (1)
- Cohen, L. Jonathan (Laurence Jonathan) (1)
- International Congress for Logic, Methodology and Philosophy of Science, 1st, Stanford, Calif., 1960 (1)
- International Union of the History and Philosophy of Science. Division of Logic, Methodology and Philosophy of Science (1)
- International Union of the History and Philosophy of Science. Division of Logic, Methodology and Philosophy of science (1)
- National Academy of Sciences, Washington, D.C (1)
- Tarski, Alfred, 1902- (1)