Smith, Philip Sidney (1877-1949) Stany Zjednoczone. Geological Survey
Smith, Philip Sidney (1877-1949) Stany Zjednoczone. Geological Survey
Smith, Philip Sidney (1877-1949) Stany Zjednoczone. Geological Survey
Smith, Philip Sidney (1877-1949) Stany Zjednoczone. Geological Survey
Smith, Philip Sidney (1877-1949) Stany Zjednoczone. Geological Survey
Smith, Philip Sidney (1877-1949) United States of America. Geological Survey.
Smith, Philip Sidney (1877-1949) Stany Zjednoczone. Geological Survey
Smith, Philip Sidney (1877-1949) United States of America. Geological Survey.
Capps, Stephen Reid (1881-1949) Smith, Philip Sidney (1877-1949) Stany Zjednoczone. Geological Survey
Smith, Philip Sidney (1877-1949) Mertie, John Beaver (1888-1980) Stany Zjednoczone. Geological Survey
Smith, Philip Sidney (1877-1949) United States of America. Geological Survey.
Smith, Philip Sidney (1877-1949) United States of America. Geological Survey.
Smith, Philip Sidney (1877-1949) United States of America. Geological Survey.