General & OtherBackfilling problem in the anthracite region as it relates to conservation of anthracite and prevention of subsidenceS. H. Ash![Backfilling problem in the anthracite region as it relates to conservation of anthracite and prevention of subsidence]()
Backfilling problem in the anthracite region as it relates to conservation of anthracite and prevention of subsidence
S. H. Ash
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“Backfilling problem in the anthracite region as it relates to conservation of anthracite and prevention of subsidence” by S. H. Ash: a public-domain book in…
Catalogue details
- Author
- S. H. Ash
- Category
- General & Other
- Language
- English
- Source
- HathiTrust