| Title: | Frequency of earthquakes for selected areas in the western United States for the period 1945-59 |
| Author: | Twenhofel, W. S. (William Stephens), 1918- |
| Author: | Balsinger, D. F. |
| Author: | Black, R. A. |
| Author: | U.S. Atomic Energy Commission. Division of Technical Information |
| Author: | U.S. Atomic Energy Commission |
| Author: | Geological Survey (U.S.) |
| Note: | Washington, D.C. : U.S. Dept. of the Interior, Geological Survey, [1961], 1961 |
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| Link: | page images at HathiTrust |
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| Subject: | Earthquakes |
| Subject: | Earthquakes -- Pacific Coast (North America) |
| Subject: | Earthquakes -- West (U.S.) |
| Subject: | North America -- Pacific Coast |
| Subject: | Underground nuclear explosions |
| Subject: | Underground nuclear explosions -- Pacific Coast (North America) |
| Subject: | Underground nuclear explosions -- West (U.S.) |
| Subject: | West United States |
| Other copies: | Look for editions of this book at your library, or elsewhere. |