Hawkins, Paula
Into the water
Noura Books, 2017
 Buku Teks SO
Hawkins, Paula
Into the water
Doubleday, 2017
 Buku Teks SO
Zhongguo da bai ke quan shu. Shui li = 中国大百科全书. 水利 = Encyclopedia of China Water Conservancy
Dabai Kequanshu Chubanshe, 1998
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Frederic, Louis
Japan encyclopedia
Belknap Press, 2002
 Buku Referensi
The encyclopedia of philosophy
editor, Donald M. Borchert
Macmilan, 1996
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