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McGraw-Hill, 2012
Buku Teks
Abdul Subor Momand, author
2011
UI - Tesis (Open)
Massow, Fr. von, author
Macmillan, 1997
Buku Teks
Dubois, Brenda, 1949-, author
Allyn and Boston, 1992
Buku Teks
Gore, M.S., author
Asia Publishing House, 1965
Buku Teks