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其他書名
student text manual
出版U.S. Dept. of Labor, Mine Safety and Health Administration, National Mine Health and Safety Academy, 2002
主題Headframes (Mining)Hoisting machineryMine hoistingTechnology & Engineering / Construction / GeneralTechnology & Engineering / Machinery
URLhttp://books.google.com.hk/books?id=LhC8RAwU9fYC&hl=&source=gbs_api