Context

Context of Washing and coking tests of coal and cupola tests of coke, conducted by the United States fuel-testing plant at St. Louis, Mo., January 1, 1905, to June 30, 1907, by Richard Moldenke, A.W. Belden and G.R. Delamater with introduction by J.A. Holmes, in charge of technology branch. [U.S. Geological Survey Bulletin 336.].
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