Winnington, Alan
The Slaves of the cool mountains / Alan Winnington
Seven Seas Publishers, 1962
 Buku Teks
Xiang, Jing, compiler
Altay, golden mountains and silver rivers
China Intercontinental Press, 2009
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Sheriff, Robert E., author
Exploration seismology
Cambridge University Press, 1994
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Exploration of the universe
 Buku Teks
Hale, John R., author
Age of exploration
Time-Life Books, 1974
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