Wright, G. Frederick (George Frederick), 1838 1921., . books & textbook
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
Wright, G. Frederick (George Frederick), 1838-1921., .
University of California Libraries /1889-01-01 Paperback / 660 Pages
isbn-10: 1125457910 / isbn-13: 9781125457917
