Bowen, Charles F. (1871-1953) United States of America. Geological Survey.
Bowen, Charles F. (1871-1953) United States of America. Geological Survey.
Bowen, Charles F. (1871-1953) United States of America. Geological Survey.
Bowen, Charles F. (1871-1953) United States of America. Geological Survey.
Heald, Kenneth Conrad (1888-1971) Bowen, Charles F. (1871-1953) United States of America. Geological Survey.
Bowen, Charles F. (1871-1953) Roundy, Paul Vere (1884-1937) Ross, Clarence Samuel (1880-1975) Reeves, Frank (1886-1986) United States of America. Geological Survey.
Bowen, Charles F. (1871-1953) Stany Zjednoczone. Geological Survey
Dobbin, Carroll Edward (1892-1967) Bowen, Charles F. (1871-1953) Hoots, Harold William (1899-1979) Stany Zjednoczone. Geological Survey