Buku Teks
Bertrand, Jacques, author
Cambridge, 2005
Buku Teks
Bertrand, Jacques, author
Cambridge University, 2004
Buku Teks
edited by Astri Suhrkel and Lela Garner Noble
Frederick A. Praeger, 1977
Buku Teks
Dan Landis, Rosita D. Albert, editor
[Springer, ], 2012
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