Stebinger, Eugene (1883-1951) United States of America. Geological Survey.
Stebinger, Eugene (1883-1951) Stany Zjednoczone. Geological Survey
Stebinger, Eugene (1883-1951) Stany Zjednoczone. Geological Survey
Stebinger, Eugene (1883-1951) Stany Zjednoczone. Geological Survey