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Oxford University Press, 2005
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Silva, J.J.R. Frausto da, author
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Silva, J.J.R. Frausto da, author
Clarendon Press, 1991
Buku Teks
Kaim, Wolfgang, author
John Wiley & Sons, 2005
Buku Teks
Hughes, M.N., author
John Wiley & Sons, 1984
Buku Teks