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The mound-builders and platycnemism in Michigan: reprinted from Smithsonian report for 1873 ; Certain characteristics pertaining to ancient man in Michigan : reprinted from Smithsonian report for 1875
The mound-builders and platycnemism in Michigan: reprinted from Smithsonian report for 1873 ; Certain characteristics pertaining to ancient man in Michigan : reprinted from Smithsonian report for 1875