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Washing and coking tests of coal and cupola tests of coke, ..
United States congressional serial set ; serial set no. 5304;House document / 60th Congress, 1st session. House ; no. 731
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Report on the operations of the coal-testing plant of the U..
United States congressional serial set ; serial set no. 5008;House document / 59th Congress, 1st session. House ; no. 490, pt. 1
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Report on the operations of the coal-testing plant of the U..
United States congressional serial set ; serial set no. 5010;House document / 59th Congress, 1st session. House ; no. 490, pt. 3