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Advanced Mine Rescue Training. Part IV. Suggested Procedure in Sealing and Unsealing Mine Fires and in Recovery Operations, by J.J. Forbes and G.W. Grove

J. J. Forbes

出版	U.S. Government Printing Office, 1929
URL	http://books.google.com.hk/books?id=6vxWQwAACAAJ&hl=&source=gbs_api