TY  - BOOK
AU  - Stone,Ralph W.
TI  - Pennsylvania caves,
T2  - Pennsylvania. Geological survey (4th, 1919-  ) Bulletin G3
AV  - GB605.P4 S7
PY  - 1930///
CY  - Harrisburg
PB  - Department of internal affairs, Topographic and geologic survey
KW  - Caves
N1  - Bibliographical footnotes
ER  -