Baker, Arthur Alan (1897-1996) United States of America. Geological Survey.
Baker, Arthur Alan (1897-1996) United States of America. Geological Survey.
Baker, Arthur Alan (1897-1996) Stany Zjednoczone. Geological Survey
Spieker, Edmund Maute (1895-1978) Baker, Arthur Alan (1897-1996) Stany Zjednoczone. Geological Survey