CO2, Carbon Dioxide, Fire Extinguishing Equipment Instructions [Fire Fighting] Page: 1 of 1
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CO2, Carbon Dioxide, Fire Extinguishing Equipment Instructions [Fire Fighting], technical drawing, July 30, 1940; (https://texashistory.unt.edu/ark:/67531/metapth887242/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting Texas Parks & Wildlife Department.