2026-04-17T05:26:13Z

The Pittsburg coal bed : an address...

Call Number:

P2968

Date:

1897

Description:

Journal article reprint from: The Proceedings of the American Association for the Advancement of Science, v.46 (1897).

Subject Topical:

Coal--Pennsylvania., Geology--Pennsylvania.

All:

Geology--Pennsylvania., Coal--Pennsylvania.