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2. Pumice beds at Sumner Lake, Oregon.;Allison;Bull. Geol. Soc. Am.,1945
3. Intrabasin varve correlation.;Anderson;Bull. Geol. Soc. Am.,1966
4. Armstrong, E. F. and Miall, L. M. 1946 Raw Materials from the Sea.
5. Some geochemical applications of measurements of hydrogen ion concentration.;Atkins;Sci. Proc. Roy. Dublin Soc.,1930