Individual #Henry_Rowe_Schoolcraft__Schoolcraft  United States geologist and ethnologist and explorer who discovered the source of the Mississippi River (1793-1864)
  type:  #geologist__geophysicist  a specialist in geology
  type:  #ethnologist  an anthropologist who studies ethnology
  type:  #explorer__adventurer  someone who travels into little known regions (especially for some scientific purpose)

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