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You've searched: Rocky Mountain Laboratories Historical Collection

  • All fields: crossing
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    • Fieldwork, River Crossing

    • 1916
    • Fieldwork; Rocky Mountain spotted fever; Parker, R. R. (Ralph Robinson), 1888-1949; Staff; Rocky Mountain Laboratory (Ravalli County, Mont.)
    • Field scientists, includes Dr. R. R. Parker crossing river on horseback in Powderville Montana

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