Kortmann, C.A.J.M.
Kluwer Law International, 2007
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Heringa, A.W.
Metro, 2009
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Kortmann, C. A. J. M.
Kluwer Law Internationa, 2007
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Stone, Geoffrey R.
Little, Brown and Company, 1991
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Wade, E.C.S. (Emlyn Capel Stewart)
Longmans Green, 1951
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