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Report of the Royal Commission of Inquiry Into the Best Methods of Working the Thick Coal Seams of the Maitland-Cessnock District, &c
New South Wales. Parliament. Legislative Assembly
出版
Government Printer, South Africa
, 1912
URL
http://books.google.com.hk/books?id=0j6ttgAACAAJ&hl=&source=gbs_api