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The undeveloped mineral resources of Pennsylvania introduction by George H. Ashley
Historical Society of Pennsylvania - Closed Stacks Vza .25
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- Format:
- Book
- Author/Creator:
- Ashley, Geo. H. (George Hall), 1866-1951
- Series:
- Mineral resource report ; no. M18
- Language:
- English
- Subjects (All):
- Mines and mineral resources--Pennsylvania.
- Mines and mineral resources.
- Physical Description:
- 16 p. : tables ; 23 cm.
- Place of Publication:
- Harrisburg, PA : Dept. of internal affairs, Topographic and geologic survey, 1933.
- Notes:
- At head of title: Pennysylvania. Geological survey. Fourth series.
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