
Nelson, W. H., 1959, Geology of Segula, Davidof and Khvostof Islands, Alaska: in Investigations of Alaskan volcanoes, U.S. Geological Survey Bulletin 1028-K, p. 257-266, 2 sheets, scale 1:25,000.
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225: Analyses of porphyritic feldspathic lavas of Segula volcano
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