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Google圖書搜尋
Coal Miners' Pocketbook
Edward Nathan Zern
其他書名
Formerly the Coal and Metal Miners' Pocketbook; Principles, Rules, Formulas and Tables
出版
McGraw-Hill
, 1928
URL
http://books.google.com.hk/books?id=kSAxAAAAMAAJ&hl=&source=gbs_api