Sealing-off fires underground
51
| Autor principal: | |
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| Formato: | |
| Publicado: |
Doncaster, Eng : Inst of Mining Eng,
[19-
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51
| Autor principal: | |
|---|---|
| Formato: | |
| Publicado: |
Doncaster, Eng : Inst of Mining Eng,
[19-
|
| Materias: |