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Author
- United States. Central Intelligence Agency7
- Conover, Clyde Stuart, 1916-1
- Geological Survey (U.S.)1
- Geological Survey of California1
- Haghipour, A.1
- LeConte, Joseph N. (Joseph Nisbet), 1870-19501
- Macomb, M. M. (Montgomery Meigs), 1852-19241
- Marella, Richard L.1
- Recta Foldex (Firm)1
- Swaziland. Surveyor General's Office1
- Zambia. Survey Dept1
