A notice of the W.E.A. classes that states the title, time, location, and name of the tutor for each of the 13 classes. Popper's class was scheduled on Tuesdays.

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Link to an audio recording of Prior's radio talk "Many-valued logics", part of the three-talk series entitled "The Logic Game" (1957). This is the third talk, broadcast on 17 November 1957. Only the second half of the talk is recorded. It starts at…