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Earth interpreters : F.M. Fryxell, geology, and Augustana
David A. Schroeder and Richard C. Anderso...
Bok Engelsk 1992
The Incomparable valley : a geologic interpretation of the Yosemite
edited by Fritiof Fryxell
Bok Engelsk 1950
Glacial features of Jackson Hole, Wyoming
Fryxell, F.M.
Bok Engelsk 1930