Wingo, Glenn Max, 1913-, author
Sterling, 1974
Buku Teks
Schumaker, Paul, author
Blackwell Publishing, 2008
Buku Teks
Zimmer, Heinrich, author
Meridian Books, 1956
Buku Teks
Maxey, Chester C., author
Macmillan, 1961
Buku Teks
Bunge, Mario, author
Springer, 2012
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