Kempin, Frederick G
Historical introduction to anglo American law in a nutshell
West Publishing Co, 1973
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Doe, Norman
Fundamental authority in late medieval English law
Cambridge University Press, 1990
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Holdsworth, William, Sir
A History of English law; Vol. XI
Methuen, 1938
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Hanbury, Harold Grenville
A history of English law; Vol. I
Methuen, 1956
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Powicke, Maurice
The thirteenth century, 1216-1307
At the Clarendom Press, 1962
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