New Forms of Instruments for Showing the Presence and Amount of Combustible Gas in the Air
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New Forms of Instruments for Showing the Presence and Amount of Combustible Gas in the Air, report, June 23, 1919; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc66483/: accessed December 10, 2023), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.