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2. Summary of ground-water development in Alaska, 1950;Cederstrom;U. S. Geol. Survey Circ.,1952
3. A limnological study of planktonic copepod population;Comita,1953
4. Highway Res. Bd. Bul.;Linell,1953
5. Muller, S. W., , Permafrost or permanently frozen ground and related engineering problems, Edwards Bros., Ann Arbor, Mich., 1947,