scholarly journals Ditches or Earthworks: A Reexamination of Fortified Villages on the Upper Missouri River

Author(s):  
Albert M. LeBeau III
Keyword(s):  
2009 ◽  
Author(s):  
Meriwether Lewis ◽  
William Clark
Keyword(s):  

2002 ◽  
Author(s):  
Robert B. Jacobson ◽  
Mark S. Laustrup ◽  
Joanna M. Reuter

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