Friedman, Milton, 1912-2006
The University of Chicago Press, 1962
Buku Teks SO
Sprott, Samuel Ernest, 1919-
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Buku Teks SO
edited by David Loewenstein, James Grantham Turner
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Buku Teks SO
Bradford, Richard, 1957-
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Buku Teks SO
Ash, Milton S.
McGraw-Hill, 1979
Buku Teks