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December 6, 2010 | History
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Edition Notes
At head of title: ... Department of the Interior. John Barton Payne, secretary. Bureau of Mines. Frederick G. Cottrell, director.
First edition. December, 1920. cf. verso of t.-p.
"List of patents on chlorination of natural gas": p. 9.
"Publications on natural gas and industrial gases": p.43-44.