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Guide to the geology of the upper Schuylkill valley, by Bradford Willard.
- Format:
- Book
- Author/Creator:
- Willard, Bradford, 1894-1973.
- Series:
- Progress report (Pennsylvania. Bureau of Topographic and Geologic Survey) ; G14.
- Pennsylvania. Geological survey. Fourth series. Bulletin G 14
- Language:
- English
- Subjects (All):
- Geology--Pennsylvania--Schuylkill River Valley.
- Geology.
- Pennsylvania--Schuylkill River Valley.
- Physical Description:
- 23 pages : illustrations, tables, folded map. ; 23 cm.
- Place of Publication:
- Harrisburg, Pa. : Department of internal affairs, Topographic and geologic survey, 1939.
- Notes:
- On cover: Commonwealth of Pennsylvania. Department of internal affairs.
- "List of references": pages 21-23.
- OCLC:
- 4149306
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