Frantz, Harper W., author
W.H. Freeman, 1968
Buku Teks
by Willis H. Johnson...[et al.]
Holt, Rinehart and Winston, 1974
Buku Teks
Fairley, James L., author
Van Nostrand , 1966
Buku Teks
Anderson, Arthur K., author
John Wiley & Sons, 1953
Buku Teks
Shillady, Donald
Taylor and Francis, 2012
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