Author:

Pennsylvania Bureau of Topographic and Geologic Survey  Search this

Ashley, Geo. H (George Hall) b. 1866  Search this

Subject:

Pennsylvania Bureau of Topographic and Geologic Survey  Search this

Physical description:

38 p. illus. (map.) 23 cm

Type:

Books

Place:

Pennsylvania

Date:

1931

Notes:

At head of title: Pennsylvania geological survey, fourth series.

Topic:

Geology  Search this

Data Source:

Smithsonian Libraries

EDAN-URL:

edanmdm:siris_sil_459249