DuBois, G. D., Wilson, F. H., and Shew, N. B., 1987, Potassium-argon age determinations from the Port Moller and Stepovak Bay quadrangles, Alaska Peninsula: U.S. Geological Survey Open-File Report 87-0191, unpaged, 1 sheet, scale 1:250,000.
Citation Updated: 2005-06-10 00:04:10