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^MacDONALD, John Grant, Who's Who 2013, A & C Black, 2013; online edn, Oxford University Press, Dec 2012, accessed 4 Jan 2013 (subscription required)
^MALCOMSON, Thomas Herbert, Who's Who 2013, A & C Black, 2013; online edn, Oxford University Press, Dec 2012, accessed 4 Jan 2013 (subscription required)
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