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American Standard Safety Rules for Installing and Using Electrical Equipment in and about Coal Mines (M2.1)
American Standards Association
其他書名
Sponsors, American Mining Congress and U.S. Bureau of Mines
出版Bureau of Mines, 1964
URLhttp://books.google.com.hk/books?id=1w3BB5xEgEQC&hl=&source=gbs_api
EBookFULL_PUBLIC_DOMAIN