The great ice age in Pennsylvania
By: by H. Carvill Lewis.
Publisher: Franklin Institute?
Published: 1883
Place of publication: [Philadelphia?
Language: eng
Number of pages: 21
Subjects: Geology -- Pennsylvania.; Glacial epoch -- Pennsylvania.
Notes: Cover title.
"Abstract of a lecture, delivered at the Franklin Institute, January 5, 1883."
"Reprinted from the Journal of the Franklin Institute, April, 1883."