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pl23_cgs00094.jpg

Photographic seismic recorder as illustrated in: Coming to Grips with theEarthquake Problem, by Nicholas H

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https://www.noaa.gov/media/digital-library-photo/pl23cgs00094jpg

Description

Photographic seismic recorder as illustrated in: Coming to Grips with theEarthquake Problem, by Nicholas H. Heck, 1931. Journal of the FranklinInstitute, Vol. 212, No. 3, pp. 269-303.

Display Date

1930 Ca.

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