The ice age in North America and its bearing upon the antiquity of man5th edwith many new maps and illus., enland rewritten to incorporate the facts that bring it up to date, with chapters on Lake Agassiz and the Probable cause of glaciation . «» ^i; •.?. -- •??? .?.^?^*?S%? ^^^ mm uiR Inlet ^y:i:

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Keywords: ., bookauthoruphamwarren18501934, bookcentury1900, bookdecade1910