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Historical Seismograms - Evidence from the AD 2000 Izu Islands ...

Historical Seismograms - Evidence from the AD 2000 Izu Islands ...

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Filming <strong>Seismograms</strong> and Related Materials 38 5Figure 2. One of <strong>the</strong> original Gutenberg and Richter worksheets used in figuring <strong>the</strong>magnitude of a large 1907 event for <strong>the</strong>ir textbook, Seismicity of <strong>the</strong> Earth and AssociatedPhenomena, 2nd Ed., Princeton University Press, Princeton, NJ, 1954.

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