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1by Brooks, Charles F., de Quervain, Alfred, Mercanton, P. L.Get access
Published in Geographical Review (1923)
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15by Stefansson, Vilhjalmur, Vahl, M., Amdrup, G. C., Bobe, L., Jensen, A. S.Get access
Published in Geographical Review (1930)
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16by Hobbs, W. H., Georgi, Johannes, Lyon, F. H., Kopp, WalterGet access
Published in Geographical Review (1935)
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