1.
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Cambridge, United Kingdom : Cambridge University Press, 2014.
English | F 630 DRE.I |
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2.
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Oxford : Oxford University Press, c2009.
English | G 252 PLO.E |
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3.
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London ; Philadelphia : Kogan Page Ltd., 2009. 2nd ed.
English | F 191 JOL.H |
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4.
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Oxford : Hart, 2006.
English | G 260 LLE.E |
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