Caves of southeastern Pennsylvania /
| Other Authors: | |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
Harrisburg :
Pennsylvania Geological Survey,
1974.
|
| Series: | General geology report ;
65. |
| Subjects: |
| Physical Description: | xi, 120 pages : illustrations (18 folded in pocket) ; 23 cm. |
|---|---|
| Bibliography: | Bibliography: pages 115-116. |