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Explosives accidents in anthracite mines of Pennsylvania, 1923-1927
Explosives Accidents in Anthracite Mines of Pennsylvania.
Explosives accidents in anthracite mines of Pennsylvania, 1923-1927
Explosives Accidents in Anthracite Mines of Pennsylvania.
Explosives accidents in anthracite mines of Pennsylvania, 1923-1927
U. S. Bur. Mines -- Bul
Howell, S.P. (author)
1931
93 pages
3 Figs, partly Supp on plate
Report
English
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