Moore, W.G.
London : Penguin Books, 1984,
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Mayhew, Susan, author
Oxford University Press, 1992
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Whittow, John B., author
Allen Lane, 1984
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Goodall, Brian, author
Penguin Books, 1987
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edited by R.J. Johnston, Derek Gregory, Geraldine Pratt, Michael Watts
Blackwell Publishing, 2000
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