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1. |
Chen, Hsi Shu / U.S. Army Engineer Waterways Experiment Station : available from National Technical Information Service / 1987]
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2. |
Geological Survey / 1915
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3. |
Geological Survey / 1949
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4. |
Geological Survey / 1941
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5. |
Geological Survey / 1920
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6. |
Geological survey (États-Unis) / Edition of June 1898. / U.S. Geological Survey / 1898
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7. |
Geological survey (États-Unis) / Geological Survey / 2011
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8. |
Geological survey (États-Unis) / Geological Survey / 1950
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9. |
جعفر الصادق / Winter / 1924
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10. |
U.S government / 1978
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