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Google圖書搜尋
Bituminous Coal Mining Laws of Pennsylvania for Strip Mines
Pennsylvania. Department of Mines and Mineral Industries
其他書名
Including Rules and Regulations and Procedures
出版
Department of Mines and Mineral Industries.
, 1962
URL
http://books.google.com.hk/books?id=N6cRHAAACAAJ&hl=&source=gbs_api