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1par Crawford Robert
Edinburgh University Press 2000Livre -
2par Crawford Robert
Penguin books copyright 2007Livre -
3par Crawford Robert
Clarendon press 1990Livre -
4par Crawford Robert
Edinburgh University Press 2014, cop. 2014Livre -
5par Crawford Robert MacGregor Martyn
Cambridge University Press cop. 2008Livre -
6Penguin books 2001Livre