Powers, H. A., Coats, R. R., and Nelson, W. H., 1960, Geology and submarine physiography of Amchitka Island, Alaska: U.S. Geological Survey Bulletin 1028-P, p. 521-554, 1 plate, scale approx. 1:76,032. full-text PDF
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250: Chemical and spectrographic analyses and norms of volcanic rocks from Amchitka Island