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Eight-piece Concrete Sets for Small Mine Openings
Claudius W. Dwiggins
Correll C. Shale
John Nagy
Joseph W. Town
Karl-Heinz Frohne
Maynard O. Serbousek
Merle L. Bowser
George E. Fasching
John W. Conn
K. Robert Dorman
Leo A. Schrider
Philip E. Sanker
William E. Thomas
Hal J. Kelly
Harry C. Verakis
M. K. Romeo
其他書名
A Progress Report
出版
U.S. Department of the Interior, Bureau of Mines
, 1969
URL
http://books.google.com.hk/books?id=gDVxi3rMMPAC&hl=&source=gbs_api
EBook
FULL_PUBLIC_DOMAIN