The relative grindability of coal
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書誌事項
The relative grindability of coal
（Bulletin / Carnegie Institute of Technology, 72）
Mining and Metallurgical Advisory Boards, 1935
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注記
Includes bibliographical references
The relative grindability of coal
（Bulletin / Carnegie Institute of Technology, 72）
Mining and Metallurgical Advisory Boards, 1935
Includes bibliographical references