"Apparatus for Analysis of Atmospheric Air, Devised by Dr. Klas Sondén" (frontispiece) from <i>The Composition of the Atmosphere with Special Reference to Its Oxygen Content</i> by Francis Gano Benedict.  Washington (D.C.): Carnegie Institution of Washington, 1912.)
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Benedict, Francis Gano</div>
1912<div style="display: none;">date QS:P571,+1912-00-00T00:00:00Z/9</div>
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