The Ice Age in North America and its bearings upon the antiquity of man /
Wright, George Frederick.
The Ice Age in North America and its bearings upon the antiquity of man / by G. Frederic Wright. With an appendix on "The probable cause of glaciation" / by Warren Upham. - London : Kegan Paul, Trench, Trübner & Co., 1890. - XVIII, 622 p., [3] h. de map. pleg., [1] h. de lám. ; 23 cm.
Glaciares---Estados Unidos.
The Ice Age in North America and its bearings upon the antiquity of man / by G. Frederic Wright. With an appendix on "The probable cause of glaciation" / by Warren Upham. - London : Kegan Paul, Trench, Trübner & Co., 1890. - XVIII, 622 p., [3] h. de map. pleg., [1] h. de lám. ; 23 cm.
Glaciares---Estados Unidos.
