The coal industry of the world with special reference to international trade in coal /

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• 主题词：Coal mines and mining.Coal trade.
• 责任者：Hoar ; Hannah Marceline Dayle
• 出版者：U.S. Government Printing Office
• 出版年：1930-01-01
• 出版地：Washington :
• 出版日期：1930-01-01
• 分类号：873
• 语言：无

摘要

At head of title: U.S. Department of Commerce. R.P. Lamont, secretary. Bureau of Foreign and Domestic Commerce. William L. Cooper, director.;"Glossary of terms used": p. 317-320.