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Beijing daxue Chubanshe, 2000
Buku Teks
Wright, W., author
University Press, 1951
Buku Teks
Whitney, William Dwight, author
Harvard University Press, 1941
Buku Teks
Kaplan, Jeffrey P., author
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Buku Teks
Crocker, Mary E. Coffman, author
McGraw-Hill, 1990
Buku Teks