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2. Ackerberg-Hastings Amy (2005) John Playfair in Letters. Proceedings of the Canadian Society for History and Philosophy of Mathematics, vol. 18, 9–18. Thirty-First Annual Meeting, 4–6 June.
3. Ackerberg-Hastings Amy (2008) John Playfair on British Decline in Mathematics. BSHM Bulletin 23, no. 2: 81–95.
4. Ackerberg-Hastings Amy (2009) John Playfair in the Natural Philosophy Classroom. In: Bjarnadóttir Kristín, Furinghetti Fulvia, Schubring Gert (Eds) Dig where you stand. Proceedings of the Conference on On-going Research in the History of Mathematics Education. Reykjavík: University of Iceland School of Education.
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