Sraffa MS/B/20/1
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Pièce
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11 Feb 1815
Fait partie de Manuscripts collected by Piero Sraffa
Sraffa MS/B/19/4
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Pièce
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2 Jun [1819]
Fait partie de Manuscripts collected by Piero Sraffa
Upper Brook Street. Apologises for his absence the previous night when Malthus was also unable to attend