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Flood Prevention in Anthracite Mines, Anthracite Region of Pennsylvania, Projects Nos 4 Et 5, by S.H. Ash, H.A. Dierks, D.O. Kennedy and P.S. Miller

S. H. AshH. A. DierksD. O. KennedyP. S. MillerEtats-Unis. Mines (Bureau)

出版	U.S. Government Printing Office, 1956
URL	http://books.google.com.hk/books?id=uPUsGQAACAAJ&hl=&source=gbs_api