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Systematic timbering in French mines
Particulars from a report issued by a sub-committee of the Prussian Commission on the Falls of Rock and Coal in Mines, concerning the methods of working and timbering employed in French collieries. (Serial. 1st part) (900 w.)
Systematic timbering in French mines
Particulars from a report issued by a sub-committee of the Prussian Commission on the Falls of Rock and Coal in Mines, concerning the methods of working and timbering employed in French collieries. (Serial. 1st part) (900 w.)
Systematic timbering in French mines
Col Guard
1902
Ill.
Aufsatz (Zeitschrift)
Englisch
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