Add. MS a/519/10
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Unidad documental simple
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11 Apr. 1963
Parte de Additional Manuscripts a
Lund. - Thanks Duff for his letter of 2 Apr.; is grateful for the interest shown in his lecture. Discussion of the definition of the word 'fact', and of the 'concept of "performative utterances"'. The days he spent in Cambridge a year ago 'remain as one of the most pleasant memories of my life'. Sends Duff his 'little book on "The Problem of the Monetary Unit"'.