Pennsylvania glaciation, first phase; materials for a discussion of the attenuated border of the moraine described in volume Z of the Second Geological Survey of Pennsylvania.
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| Format: | Book |
| Language: | English |
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Woodstock, Vt.
[publisher not identified],
1917.
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| Subjects: |
| Physical Description: | x, 101 pages including frontispiece (map) illustrations 23 cm |
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