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Greenland icefields and life in the North Atlantic : with a new discussion of the causes of the ice age
by G. Frederick Wright and Warren Upham
Bok Engelsk 1896
Man and the glacial period
Wright, G. Frederick
Bok Engelsk 1893
Man and the glacial period
by G. Frederick Wright ; with an appendix...
Bok Engelsk 1892
The ice age in North America and its bearings upon the antiquity of man : with an appendix on "The probable cause of glaciation" by Warren Upham
by G. Frederick Wright
Bok Engelsk 1889