Seismicity Maps are published from the preliminary determinations of hypocenters of the USCGS, Environmental Science Services Administration, Department of Commerce. The seismicity covers the interval January 1, 1961 through December 31, 1967. Two large plates accompany the paper. Plate 1 contains a plot of all epicenters; Plate 2 shows a plot of all events deeper than 100 km.

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