edited by P. Cheeseman and R.W. Oldford
Springer-Verlag, 1994
Buku Teks
Vilbrandt, Frank C.
McGraw-Hill Kogakusha, Ltd., 1959
Buku Teks
Sage, 2014
Buku Teks
Beljame, Alexandre, author
Trubner, 1948
Buku Teks
Andrew, John A.
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Buku Teks