Guide to the geology of the upper Schuylkill Valley : by Bradford Willard.
| Main Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
Harrisburg, Pa. :
Department of Internal Affairs, Topographic and Geologic Survey,
1939.
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| Series: | Bulletin (Pennsylvania. Bureau of Topographic and Geologic Survey) ;
G14. |
| Subjects: |
| Item Description: | At head of title: Pennsylvania Geological Survey, fourth series. |
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| Physical Description: | 23 pages including illustrations, tables, folded map. |
| Bibliography: | "List of references": pages 21-23. |