Sections showing development along fissures from Ahmeek mine to Pennsylvania mine, Keweenaw counyy, Mich.
Kaydedildi:
| Yazar: | |
|---|---|
| Materyal Türü: | Harita |
| Dil: | İngilizce |
| Baskı/Yayın Bilgisi: |
U. S. Geological Survey
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| Seri Bilgileri: | Professional paper 144 |
| Etiketler: |
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