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Grant, Edward (2007), A History of Natural Philosophy: From the Ancient World to the Nineteenth Century, Cambridge: Cambridge University Press, pp. 303–305, ISBN 9781139461092 9781139461092
Grant, Edward (2007), A History of Natural Philosophy: From the Ancient World to the Nineteenth Century, Cambridge: Cambridge University Press, pp. 303, 312–313, ISBN 9781139461092 9781139461092