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Guide to the mineral collections in the Illinois State Museum
Crook, Alja Robinson
Bok Engelsk 1920
The mineralogy of the Chicago area
by Alja Robinson Crook
Bok Engelsk 1902
Ueber einige fossile Knochenfische aus der mittleren Kreide von Kansas : Inaugural-Dissertation
Crook, Alja Robinson
Bok Tysk 1892