| LC control no. | sh2010101962 |
|---|---|
| Topical heading | Mines and mineral resources--Pennsylvania |
| Special note | Record generated for validation purposes. |
| Found in | Work cat.: Geology and mineral resources of the Blandburg, Tipton, Altoona, and Bellwood quadrangles, Blair, Cambria, Clearfield, and Centre Counties, Pennsylvania, 1989 |
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