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Determination of the epicenter of an earthquake by manual means on a globeof the Earth

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Determination of the epicenter of an earthquake by manual means on a globeof the Earth. In: Coming to grips with theEarthquake Problem, by Nicholas H. Heck, 1931. Journal of the FranklinInstitute, Vol. 212, No. 3, pp. 269-303.

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1930 Ca.

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